1122012100021 has 16 divisors (see below), whose sum is σ = 1156717457280. Its totient is φ = 1087669831680.

The previous prime is 1122012100007. The next prime is 1122012100127. The reversal of 1122012100021 is 1200012102211.

It is a de Polignac number, because none of the positive numbers 2^k-1122012100021 is a prime.

It is a super-2 number, since 2×1122012100021² (a number of 25 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 = 1122012099974 and 1122012100010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122012100921) 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, 6554506 + ... + 6723508.

It is an arithmetic number, because the mean of its divisors is an integer number (72294841080).

Almost surely, 2^{1122012100021} is an apocalyptic number.

It is an amenable number.

1122012100021 is a deficient number, since it is larger than the sum of its proper divisors (34705357259).

1122012100021 is a wasteful number, since it uses less digits than its factorization.

1122012100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170076.

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

Adding to 1122012100021 its reverse (1200012102211), we get a palindrome (2322024202232).

The spelling of 1122012100021 in words is "one trillion, one hundred twenty-two billion, twelve million, one hundred thousand, twenty-one".