22213212977 has 2 divisors, whose sum is σ = 22213212978. Its totient is φ = 22213212976.

The previous prime is 22213212971. The next prime is 22213213037. The reversal of 22213212977 is 77921231222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20118869281 + 2094343696 = 141841^2 + 45764^2 .

It is a cyclic number.

It is not a de Polignac number, because 22213212977 - 2⁴ = 22213212961 is a prime.

It is a super-2 number, since 2×22213212977² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22213212977.

It is not a weakly prime, because it can be changed into another prime (22213212971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106606488 + 11106606489.

It is an arithmetic number, because the mean of its divisors is an integer number (11106606489).

Almost surely, 2^22213212977 is an apocalyptic number.

It is an amenable number.

22213212977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22213212977 is an equidigital number, since it uses as much as digits as its factorization.

22213212977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The spelling of 22213212977 in words is "twenty-two billion, two hundred thirteen million, two hundred twelve thousand, nine hundred seventy-seven".