22021112101951 has 2 divisors, whose sum is σ = 22021112101952. Its totient is φ = 22021112101950.

The previous prime is 22021112101949. The next prime is 22021112102057. The reversal of 22021112101951 is 15910121112022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021112101951 - 2¹ = 22021112101949 is a prime.

Together with 22021112101949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021112101921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010556050975 + 11010556050976.

It is an arithmetic number, because the mean of its divisors is an integer number (11010556050976).

Almost surely, 2^{22021112101951} is an apocalyptic number.

22021112101951 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021112101951 is an equidigital number, since it uses as much as digits as its factorization.

22021112101951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 28.

Adding to 22021112101951 its reverse (15910121112022), we get a palindrome (37931233213973).

The spelling of 22021112101951 in words is "twenty-two trillion, twenty-one billion, one hundred twelve million, one hundred one thousand, nine hundred fifty-one".