100110111212021 has 16 divisors (see below), whose sum is σ = 102059728517808. Its totient is φ = 98180382720000.

The previous prime is 100110111211973. The next prime is 100110111212047. The reversal of 100110111212021 is 120212111011001.

It can be written as a sum of positive squares in 8 ways, for example, as 32649350309521 + 67460760902500 = 5713961^2 + 8213450^2 .

It is a cyclic number.

It is not a de Polignac number, because 100110111212021 - 2²² = 100110107017717 is a prime.

It is a super-2 number, since 2×100110111212021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100110111211987 and 100110111212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100110111211021) 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, 15532805 + ... + 21011621.

It is an arithmetic number, because the mean of its divisors is an integer number (6378733032363).

Almost surely, 2^{100110111212021} is an apocalyptic number.

It is an amenable number.

100110111212021 is a deficient number, since it is larger than the sum of its proper divisors (1949617305787).

100110111212021 is a wasteful number, since it uses less digits than its factorization.

100110111212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480632.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 100110111212021 its reverse (120212111011001), we get a palindrome (220322222223022).

The spelling of 100110111212021 in words is "one hundred trillion, one hundred ten billion, one hundred eleven million, two hundred twelve thousand, twenty-one".