100010991621402 has 96 divisors (see below), whose sum is σ = 219025673343360. Its totient is φ = 32978655144960.

The previous prime is 100010991621379. The next prime is 100010991621403. The reversal of 100010991621402 is 204126199010001.

It is a happy number.

100010991621402 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 1 + 0 + 99 + 162 + 1 + 402 = 666.

It is a super-2 number, since 2×100010991621402² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100010991621403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4086572638 + ... + 4086597110.

It is an arithmetic number, because the mean of its divisors is an integer number (2281517430660).

Almost surely, 2^{100010991621402} is an apocalyptic number.

100010991621402 is an abundant number, since it is smaller than the sum of its proper divisors (119014681721958).

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

100010991621402 is a wasteful number, since it uses less digits than its factorization.

100010991621402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27508 (or 27505 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 100010991621402 in words is "one hundred trillion, ten billion, nine hundred ninety-one million, six hundred twenty-one thousand, four hundred two".