2121002000022 has 32 divisors (see below), whose sum is σ = 4276904227200. Its totient is φ = 701190322560.

The previous prime is 2121001999867. The next prime is 2121002000081. The reversal of 2121002000022 is 2200002001212.

It is a junction number, because it is equal to n+sod(n) for n = 2121001999971 and 2121002000007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541278 + ... + 2129550.

It is an arithmetic number, because the mean of its divisors is an integer number (133653257100).

Almost surely, 2^{2121002000022} is an apocalyptic number.

2121002000022 is an abundant number, since it is smaller than the sum of its proper divisors (2155902227178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121002000022 is a wasteful number, since it uses less digits than its factorization.

2121002000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590108.

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

Adding to 2121002000022 its reverse (2200002001212), we get a palindrome (4321004001234).

It can be divided in two parts, 212100 and 2000022, that added together give a palindrome (2212122).

The spelling of 2121002000022 in words is "two trillion, one hundred twenty-one billion, two million, twenty-two", and thus it is an aban number.