22312031032221 has 32 divisors (see below), whose sum is σ = 34353104867328. Its totient is φ = 12617220839040.

The previous prime is 22312031032211. The next prime is 22312031032303. The reversal of 22312031032221 is 12223013021322.

It is not a de Polignac number, because 22312031032221 - 2⁵ = 22312031032189 is a prime.

It is a super-3 number, since 3×22312031032221³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22312031032191 and 22312031032200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312031032211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434520 + ... + 6694241.

It is an arithmetic number, because the mean of its divisors is an integer number (1073534527104).

Almost surely, 2^{22312031032221} is an apocalyptic number.

22312031032221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22312031032221 is a deficient number, since it is larger than the sum of its proper divisors (12041073835107).

22312031032221 is a wasteful number, since it uses less digits than its factorization.

22312031032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7130321.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 22312031032221 its reverse (12223013021322), we get a palindrome (34535044053543).

The spelling of 22312031032221 in words is "twenty-two trillion, three hundred twelve billion, thirty-one million, thirty-two thousand, two hundred twenty-one".