2111202000021 has 8 divisors (see below), whose sum is σ = 2817614344864. Its totient is φ = 1406128827600.

The previous prime is 2111201999993. The next prime is 2111202000059. The reversal of 2111202000021 is 1200002021112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2111202000021 - 2⁶ = 2111201999957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111201999970 and 2111202000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111202000121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334789426 + ... + 334795731.

It is an arithmetic number, because the mean of its divisors is an integer number (352201793108).

Almost surely, 2^{2111202000021} is an apocalyptic number.

It is an amenable number.

2111202000021 is a deficient number, since it is larger than the sum of its proper divisors (706412344843).

2111202000021 is a wasteful number, since it uses less digits than its factorization.

2111202000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669586211.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2111202000021 its reverse (1200002021112), we get a palindrome (3311204021133).

The spelling of 2111202000021 in words is "two trillion, one hundred eleven billion, two hundred two million, twenty-one", and thus it is an aban number.