122120000921 has 2 divisors, whose sum is σ = 122120000922. Its totient is φ = 122120000920.

The previous prime is 122120000897. The next prime is 122120001013. The reversal of 122120000921 is 129000021221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70710787225 + 51409213696 = 265915^2 + 226736^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120000921 - 2¹⁴ = 122119984537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122120000893 and 122120000902.

It is not a weakly prime, because it can be changed into another prime (122120008921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060000460 + 61060000461.

It is an arithmetic number, because the mean of its divisors is an integer number (61060000461).

Almost surely, 2^122120000921 is an apocalyptic number.

It is an amenable number.

122120000921 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120000921 is an equidigital number, since it uses as much as digits as its factorization.

122120000921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 122120000921 in words is "one hundred twenty-two billion, one hundred twenty million, nine hundred twenty-one", and thus it is an aban number.