22121023241381 has 2 divisors, whose sum is σ = 22121023241382. Its totient is φ = 22121023241380.

The previous prime is 22121023241351. The next prime is 22121023241459. The reversal of 22121023241381 is 18314232012122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21122204892100 + 998818349281 = 4595890^2 + 999409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121023241381 is a prime.

It is a super-2 number, since 2×22121023241381² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121023241351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060511620690 + 11060511620691.

It is an arithmetic number, because the mean of its divisors is an integer number (11060511620691).

Almost surely, 2^{22121023241381} is an apocalyptic number.

It is an amenable number.

22121023241381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121023241381 is an equidigital number, since it uses as much as digits as its factorization.

22121023241381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 22121023241381 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-three million, two hundred forty-one thousand, three hundred eighty-one".