22101220120081 has 2 divisors, whose sum is σ = 22101220120082. Its totient is φ = 22101220120080.

The previous prime is 22101220119973. The next prime is 22101220120093. The reversal of 22101220120081 is 18002102210122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16601069462481 + 5500150657600 = 4074441^2 + 2345240^2 .

It is a cyclic number.

It is not a de Polignac number, because 22101220120081 - 2³³ = 22092630185489 is a prime.

It is a super-2 number, since 2×22101220120081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22101220120981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050610060040 + 11050610060041.

It is an arithmetic number, because the mean of its divisors is an integer number (11050610060041).

Almost surely, 2^{22101220120081} is an apocalyptic number.

It is an amenable number.

22101220120081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101220120081 is an equidigital number, since it uses as much as digits as its factorization.

22101220120081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 22.

The spelling of 22101220120081 in words is "twenty-two trillion, one hundred one billion, two hundred twenty million, one hundred twenty thousand, eighty-one".