22121013223693 has 2 divisors, whose sum is σ = 22121013223694. Its totient is φ = 22121013223692.

The previous prime is 22121013223601. The next prime is 22121013223703. The reversal of 22121013223693 is 39632231012122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14492358175689 + 7628655048004 = 3806883^2 + 2762002^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121013223693 - 2⁹ = 22121013223181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121013226693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060506611846 + 11060506611847.

It is an arithmetic number, because the mean of its divisors is an integer number (11060506611847).

Almost surely, 2^{22121013223693} is an apocalyptic number.

It is an amenable number.

22121013223693 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121013223693 is an equidigital number, since it uses as much as digits as its factorization.

22121013223693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 22121013223693 in words is "twenty-two trillion, one hundred twenty-one billion, thirteen million, two hundred twenty-three thousand, six hundred ninety-three".