22121024204031 has 4 divisors (see below), whose sum is σ = 29494698938712. Its totient is φ = 14747349469352.

The previous prime is 22121024203979. The next prime is 22121024204051. The reversal of 22121024204031 is 13040242012122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22121024204031 - 2⁷ = 22121024203903 is a prime.

It is a super-2 number, since 2×22121024204031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22121024203992 and 22121024204010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121024204051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3686837367336 + ... + 3686837367341.

It is an arithmetic number, because the mean of its divisors is an integer number (7373674734678).

Almost surely, 2^{22121024204031} is an apocalyptic number.

22121024204031 is a deficient number, since it is larger than the sum of its proper divisors (7373674734681).

22121024204031 is an equidigital number, since it uses as much as digits as its factorization.

22121024204031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7373674734680.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 22121024204031 its reverse (13040242012122), we get a palindrome (35161266216153).

The spelling of 22121024204031 in words is "twenty-two trillion, one hundred twenty-one billion, twenty-four million, two hundred four thousand, thirty-one".