122015225021251 has 2 divisors, whose sum is σ = 122015225021252. Its totient is φ = 122015225021250.

The previous prime is 122015225021233. The next prime is 122015225021281. The reversal of 122015225021251 is 152120522510221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122015225021251 - 2²⁷ = 122015090803523 is a prime.

It is not a weakly prime, because it can be changed into another prime (122015225021281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61007612510625 + 61007612510626.

It is an arithmetic number, because the mean of its divisors is an integer number (61007612510626).

Almost surely, 2^{122015225021251} is an apocalyptic number.

122015225021251 is a deficient number, since it is larger than the sum of its proper divisors (1).

122015225021251 is an equidigital number, since it uses as much as digits as its factorization.

122015225021251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 122015225021251 its reverse (152120522510221), we get a palindrome (274135747531472).

The spelling of 122015225021251 in words is "one hundred twenty-two trillion, fifteen billion, two hundred twenty-five million, twenty-one thousand, two hundred fifty-one".