22121220130331 has 4 divisors (see below), whose sum is σ = 25281394434672. Its totient is φ = 18961045825992.

The previous prime is 22121220130253. The next prime is 22121220130333. The reversal of 22121220130331 is 13303102212122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121220130331 is a prime.

It is a super-2 number, since 2×22121220130331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22121220130297 and 22121220130306.

It is not an unprimeable number, because it can be changed into a prime (22121220130333) 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, 1580087152160 + ... + 1580087152173.

It is an arithmetic number, because the mean of its divisors is an integer number (6320348608668).

Almost surely, 2^{22121220130331} is an apocalyptic number.

22121220130331 is a deficient number, since it is larger than the sum of its proper divisors (3160174304341).

22121220130331 is an equidigital number, since it uses as much as digits as its factorization.

22121220130331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160174304340.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 22121220130331 its reverse (13303102212122), we get a palindrome (35424322342453).

The spelling of 22121220130331 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, one hundred thirty thousand, three hundred thirty-one".