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1230442242220 = 22561522112111
BaseRepresentation
bin10001111001111100000…
…100101010000010101100
311100121222122011020122001
4101321330010222002230
5130124421203222340
62341131331302044
7154616335330552
oct21717404520254
94317878136561
101230442242220
11434911628264
1217a57474a924
138c051491699
14437a75b1bd2
152201756e29a
hex11e7c12a0ac

1230442242220 has 12 divisors (see below), whose sum is σ = 2583928708704. Its totient is φ = 492176896880.

The previous prime is 1230442242217. The next prime is 1230442242229. The reversal of 1230442242220 is 222422440321.

It is a happy number.

It is a super-2 number, since 2×12304422422202 (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1230442242229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30761056036 + ... + 30761056075.

It is an arithmetic number, because the mean of its divisors is an integer number (215327392392).

Almost surely, 21230442242220 is an apocalyptic number.

1230442242220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230442242220 is an abundant number, since it is smaller than the sum of its proper divisors (1353486466484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230442242220 is a wasteful number, since it uses less digits than its factorization.

1230442242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61522112120 (or 61522112118 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 1230442242220 its reverse (222422440321), we get a palindrome (1452864682541).

The spelling of 1230442242220 in words is "one trillion, two hundred thirty billion, four hundred forty-two million, two hundred forty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 61522112111 123044224222 246088448444 307610560555 615221121110 1230442242220