22121003031 has 8 divisors (see below), whose sum is σ = 29530512000. Its totient is φ = 14729414712.

The previous prime is 22121003017. The next prime is 22121003053. The reversal of 22121003031 is 13030012122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22121003031 - 2⁷ = 22121002903 is a prime.

It is a super-2 number, since 2×22121003031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22121003031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121003011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4477281 + ... + 4482218.

It is an arithmetic number, because the mean of its divisors is an integer number (3691314000).

Almost surely, 2^22121003031 is an apocalyptic number.

22121003031 is a deficient number, since it is larger than the sum of its proper divisors (7409508969).

22121003031 is an equidigital number, since it uses as much as digits as its factorization.

22121003031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960325.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 22121003031 its reverse (13030012122), we get a palindrome (35151015153).

Subtracting from 22121003031 its reverse (13030012122), we obtain a palindrome (9090990909).

The spelling of 22121003031 in words is "twenty-two billion, one hundred twenty-one million, three thousand, thirty-one".