1202021112157 has 2 divisors, whose sum is σ = 1202021112158. Its totient is φ = 1202021112156.

The previous prime is 1202021112091. The next prime is 1202021112221. The reversal of 1202021112157 is 7512111202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 721431095641 + 480590016516 = 849371^2 + 693246^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202021112157 - 2³⁵ = 1167661373789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202021412157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601010556078 + 601010556079.

It is an arithmetic number, because the mean of its divisors is an integer number (601010556079).

Almost surely, 2^{1202021112157} is an apocalyptic number.

It is an amenable number.

1202021112157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202021112157 is an equidigital number, since it uses as much as digits as its factorization.

1202021112157 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 25.

Adding to 1202021112157 its reverse (7512111202021), we get a palindrome (8714132314178).

The spelling of 1202021112157 in words is "one trillion, two hundred two billion, twenty-one million, one hundred twelve thousand, one hundred fifty-seven".