22120209938977 has 2 divisors, whose sum is σ = 22120209938978. Its totient is φ = 22120209938976.

The previous prime is 22120209938969. The next prime is 22120209938993. The reversal of 22120209938977 is 77983990202122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17066350748736 + 5053859190241 = 4131144^2 + 2248079^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120209938977 - 2³ = 22120209938969 is a prime.

It is not a weakly prime, because it can be changed into another prime (22120209938917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060104969488 + 11060104969489.

It is an arithmetic number, because the mean of its divisors is an integer number (11060104969489).

Almost surely, 2^{22120209938977} is an apocalyptic number.

It is an amenable number.

22120209938977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22120209938977 is an equidigital number, since it uses as much as digits as its factorization.

22120209938977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 22120209938977 in words is "twenty-two trillion, one hundred twenty billion, two hundred nine million, nine hundred thirty-eight thousand, nine hundred seventy-seven".