122012022157 has 2 divisors, whose sum is σ = 122012022158. Its totient is φ = 122012022156.

The previous prime is 122012022131. The next prime is 122012022229. The reversal of 122012022157 is 751220210221.

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., 113798950281 + 8213071876 = 337341^2 + 90626^2 .

It is a cyclic number.

It is not a de Polignac number, because 122012022157 - 2¹⁹ = 122011497869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122012022557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61006011078 + 61006011079.

It is an arithmetic number, because the mean of its divisors is an integer number (61006011079).

Almost surely, 2^122012022157 is an apocalyptic number.

It is an amenable number.

122012022157 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012022157 is an equidigital number, since it uses as much as digits as its factorization.

122012022157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 122012022157 its reverse (751220210221), we get a palindrome (873232232378).

The spelling of 122012022157 in words is "one hundred twenty-two billion, twelve million, twenty-two thousand, one hundred fifty-seven".