2122002000021 has 16 divisors (see below), whose sum is σ = 2859832342080. Its totient is φ = 1399492268160.

The previous prime is 2122002000017. The next prime is 2122002000073. The reversal of 2122002000021 is 1200002002212.

It is not a de Polignac number, because 2122002000021 - 2² = 2122002000017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122001999970 and 2122002000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122002000421) 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, 8937510 + ... + 9171863.

It is an arithmetic number, because the mean of its divisors is an integer number (178739521380).

Almost surely, 2^{2122002000021} is an apocalyptic number.

It is an amenable number.

2122002000021 is a deficient number, since it is larger than the sum of its proper divisors (737830342059).

2122002000021 is a wasteful number, since it uses less digits than its factorization.

2122002000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18109796.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2122002000021 its reverse (1200002002212), we get a palindrome (3322004002233).

The spelling of 2122002000021 in words is "two trillion, one hundred twenty-two billion, two million, twenty-one", and thus it is an aban number.