22121100021071 has 2 divisors, whose sum is σ = 22121100021072. Its totient is φ = 22121100021070.

The previous prime is 22121100021017. The next prime is 22121100021073. The reversal of 22121100021071 is 17012000112122.

It is a happy number.

Together with previous prime (22121100021017) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22121100021071 - 2³⁸ = 21846222114127 is a prime.

It is a super-2 number, since 2×22121100021071² (a number of 27 digits) contains 22 as substring.

Together with 22121100021073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121100021073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060550010535 + 11060550010536.

It is an arithmetic number, because the mean of its divisors is an integer number (11060550010536).

Almost surely, 2^{22121100021071} is an apocalyptic number.

22121100021071 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121100021071 is an equidigital number, since it uses as much as digits as its factorization.

22121100021071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 22121100021071 its reverse (17012000112122), we get a palindrome (39133100133193).

The spelling of 22121100021071 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, twenty-one thousand, seventy-one".