102201222121157 has 2 divisors, whose sum is σ = 102201222121158. Its totient is φ = 102201222121156.

The previous prime is 102201222121139. The next prime is 102201222121211. The reversal of 102201222121157 is 751121222102201.

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., 75834732722596 + 26366489398561 = 8708314^2 + 5134831^2 .

It is a cyclic number.

It is not a de Polignac number, because 102201222121157 - 2²⁶ = 102201155012293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102201222121657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51100611060578 + 51100611060579.

It is an arithmetic number, because the mean of its divisors is an integer number (51100611060579).

Almost surely, 2^{102201222121157} is an apocalyptic number.

It is an amenable number.

102201222121157 is a deficient number, since it is larger than the sum of its proper divisors (1).

102201222121157 is an equidigital number, since it uses as much as digits as its factorization.

102201222121157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 102201222121157 its reverse (751121222102201), we get a palindrome (853322444223358).

The spelling of 102201222121157 in words is "one hundred two trillion, two hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred fifty-seven".