1112120100021 has 64 divisors (see below), whose sum is σ = 1900306649088. Its totient is φ = 563570777088.

The previous prime is 1112120100019. The next prime is 1112120100053. The reversal of 1112120100021 is 1200010212111.

It is not a de Polignac number, because 1112120100021 - 2¹ = 1112120100019 is a prime.

It is a super-2 number, since 2×1112120100021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112120100011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 460630 + ... + 1560903.

It is an arithmetic number, because the mean of its divisors is an integer number (29692291392).

Almost surely, 2^{1112120100021} is an apocalyptic number.

It is an amenable number.

1112120100021 is a deficient number, since it is larger than the sum of its proper divisors (788186549067).

1112120100021 is a wasteful number, since it uses less digits than its factorization.

1112120100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021650.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1112120100021 its reverse (1200010212111), we get a palindrome (2312130312132).

The spelling of 1112120100021 in words is "one trillion, one hundred twelve billion, one hundred twenty million, one hundred thousand, twenty-one".