122120101021157 has 2 divisors, whose sum is σ = 122120101021158. Its totient is φ = 122120101021156.

The previous prime is 122120101021133. The next prime is 122120101021159. The reversal of 122120101021157 is 751120101021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82962968776801 + 39157132244356 = 9108401^2 + 6257566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122120101021157 is a prime.

Together with 122120101021159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122120101021159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060050510578 + 61060050510579.

It is an arithmetic number, because the mean of its divisors is an integer number (61060050510579).

Almost surely, 2^{122120101021157} is an apocalyptic number.

It is an amenable number.

122120101021157 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120101021157 is an equidigital number, since it uses as much as digits as its factorization.

122120101021157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 26.

Adding to 122120101021157 its reverse (751120101021221), we get a palindrome (873240202042378).

The spelling of 122120101021157 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred one million, twenty-one thousand, one hundred fifty-seven".