121012022000021 has 2 divisors, whose sum is σ = 121012022000022. Its totient is φ = 121012022000020.

The previous prime is 121012022000017. The next prime is 121012022000057. The reversal of 121012022000021 is 120000220210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102211897800100 + 18800124199921 = 10109990^2 + 4335911^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012022000021 - 2² = 121012022000017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012022000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506011000010 + 60506011000011.

It is an arithmetic number, because the mean of its divisors is an integer number (60506011000011).

Almost surely, 2^{121012022000021} is an apocalyptic number.

It is an amenable number.

121012022000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012022000021 is an equidigital number, since it uses as much as digits as its factorization.

121012022000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121012022000021 its reverse (120000220210121), we get a palindrome (241012242210142).

The spelling of 121012022000021 in words is "one hundred twenty-one trillion, twelve billion, twenty-two million, twenty-one", and thus it is an aban number.