20212201120957 has 2 divisors, whose sum is σ = 20212201120958. Its totient is φ = 20212201120956.

The previous prime is 20212201120907. The next prime is 20212201121009. The reversal of 20212201120957 is 75902110221202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19882511558361 + 329689562596 = 4458981^2 + 574186^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212201120957 - 2¹¹ = 20212201118909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212201120907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106100560478 + 10106100560479.

It is an arithmetic number, because the mean of its divisors is an integer number (10106100560479).

Almost surely, 2^{20212201120957} is an apocalyptic number.

It is an amenable number.

20212201120957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212201120957 is an equidigital number, since it uses as much as digits as its factorization.

20212201120957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 20212201120957 in words is "twenty trillion, two hundred twelve billion, two hundred one million, one hundred twenty thousand, nine hundred fifty-seven".