21132202322377 has 2 divisors, whose sum is σ = 21132202322378. Its totient is φ = 21132202322376.

The previous prime is 21132202322369. The next prime is 21132202322513. The reversal of 21132202322377 is 77322320223112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13189252153401 + 7942950168976 = 3631701^2 + 2818324^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132202322377 - 2³ = 21132202322369 is a prime.

It is not a weakly prime, because it can be changed into another prime (21132202322677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566101161188 + 10566101161189.

It is an arithmetic number, because the mean of its divisors is an integer number (10566101161189).

Almost surely, 2^{21132202322377} is an apocalyptic number.

It is an amenable number.

21132202322377 is a deficient number, since it is larger than the sum of its proper divisors (1).

21132202322377 is an equidigital number, since it uses as much as digits as its factorization.

21132202322377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 37.

Adding to 21132202322377 its reverse (77322320223112), we get a palindrome (98454522545489).

The spelling of 21132202322377 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred two million, three hundred twenty-two thousand, three hundred seventy-seven".