21012202022107 has 2 divisors, whose sum is σ = 21012202022108. Its totient is φ = 21012202022106.

The previous prime is 21012202022047. The next prime is 21012202022177. The reversal of 21012202022107 is 70122020221012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21012202022107 is a prime.

It is not a weakly prime, because it can be changed into another prime (21012202022177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10506101011053 + 10506101011054.

It is an arithmetic number, because the mean of its divisors is an integer number (10506101011054).

Almost surely, 2^{21012202022107} is an apocalyptic number.

21012202022107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21012202022107 is an equidigital number, since it uses as much as digits as its factorization.

21012202022107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 21012202022107 its reverse (70122020221012), we get a palindrome (91134222243119).

The spelling of 21012202022107 in words is "twenty-one trillion, twelve billion, two hundred two million, twenty-two thousand, one hundred seven".