2112020002921 has 2 divisors, whose sum is σ = 2112020002922. Its totient is φ = 2112020002920.

The previous prime is 2112020002919. The next prime is 2112020002949. The reversal of 2112020002921 is 1292000202112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1833857640000 + 278162362921 = 1354200^2 + 527411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112020002921 - 2¹ = 2112020002919 is a prime.

Together with 2112020002919, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2112020002892 and 2112020002901.

It is not a weakly prime, because it can be changed into another prime (2112020002021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056010001460 + 1056010001461.

It is an arithmetic number, because the mean of its divisors is an integer number (1056010001461).

Almost surely, 2^{2112020002921} is an apocalyptic number.

It is an amenable number.

2112020002921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112020002921 is an equidigital number, since it uses as much as digits as its factorization.

2112020002921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 2112020002921 in words is "two trillion, one hundred twelve billion, twenty million, two thousand, nine hundred twenty-one".