21122200222091 has 2 divisors, whose sum is σ = 21122200222092. Its totient is φ = 21122200222090.

The previous prime is 21122200222073. The next prime is 21122200222213. The reversal of 21122200222091 is 19022200222112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21122200222091 - 2¹⁸ = 21122199959947 is a prime.

It is a super-2 number, since 2×21122200222091² (a number of 27 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 21122200222091.

It is not a weakly prime, because it can be changed into another prime (21122200227091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561100111045 + 10561100111046.

It is an arithmetic number, because the mean of its divisors is an integer number (10561100111046).

Almost surely, 2^{21122200222091} is an apocalyptic number.

21122200222091 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122200222091 is an equidigital number, since it uses as much as digits as its factorization.

21122200222091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 21122200222091 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred million, two hundred twenty-two thousand, ninety-one".