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1220212011010 = 25196891793187
BaseRepresentation
bin10001110000011010010…
…011011011000000000010
311022122120200011122122211
4101300122103123000002
5124442443233323020
62332320242052334
7154104663650566
oct21603223330002
94278520148584
101220212011010
11430541962123
1217859a64a0aa
138b0b0b93935
14430b6a3b6a6
1521b1938485a
hex11c1a4db002

1220212011010 has 32 divisors (see below), whose sum is σ = 2312039010240. Its totient is φ = 462384459072.

The previous prime is 1220212010981. The next prime is 1220212011017. The reversal of 1220212011010 is 101102120221.

It is a super-2 number, since 2×12202120110102 (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220212011017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13047637 + ... + 13140823.

It is an arithmetic number, because the mean of its divisors is an integer number (72251219070).

Almost surely, 21220212011010 is an apocalyptic number.

1220212011010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220212011010 is a deficient number, since it is larger than the sum of its proper divisors (1091826999230).

1220212011010 is a wasteful number, since it uses less digits than its factorization.

1220212011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162130.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220212011010 its reverse (101102120221), we get a palindrome (1321314131231).

The spelling of 1220212011010 in words is "one trillion, two hundred twenty billion, two hundred twelve million, eleven thousand, ten".

Divisors: 1 2 5 10 19 38 95 190 68917 93187 137834 186374 344585 465935 689170 931870 1309423 1770553 2618846 3541106 6547115 8852765 13094230 17705530 6422168479 12844336958 32110842395 64221684790 122021201101 244042402202 610106005505 1220212011010