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BaseRepresentation
bin10001100111111011001…
…100010100010010100110
311021210001122112122100112
4101213323030110102212
5124320313112321410
62324212142413022
7153333122111420
oct21477314242246
94253048478315
101211100120230
11427696498780
12176876b91172
138a28b1987a0
144289081b810
1521784455105
hex119fb3144a6

1211100120230 has 64 divisors (see below), whose sum is σ = 2926966468608. Its totient is φ = 348448383360.

The previous prime is 1211100120221. The next prime is 1211100120233. The reversal of 1211100120230 is 320210011121.

Adding to 1211100120230 its reverse (320210011121), we get a palindrome (1531310131351).

It is a super-2 number, since 2×12111001202302 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211100120233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60484502 + ... + 60504521.

It is an arithmetic number, because the mean of its divisors is an integer number (45733851072).

Almost surely, 21211100120230 is an apocalyptic number.

1211100120230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211100120230 is an abundant number, since it is smaller than the sum of its proper divisors (1715866348378).

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

1211100120230 is a wasteful number, since it uses less digits than its factorization.

1211100120230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120989061.

The product of its (nonzero) digits is 24, while the sum is 14.

The spelling of 1211100120230 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred twenty thousand, two hundred thirty".