22321032012 has 36 divisors (see below), whose sum is σ = 56434407120. Its totient is φ = 7438788192.

The previous prime is 22321032001. The next prime is 22321032023. The reversal of 22321032012 is 21023012322.

22321032012 is a `hidden beast` number, since 22 + 321 + 0 + 320 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (22321032001) and next prime (22321032023).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×22321032012³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116689 + ... + 241367.

It is an arithmetic number, because the mean of its divisors is an integer number (1567622420).

Almost surely, 2^22321032012 is an apocalyptic number.

It is an amenable number.

22321032012 is an abundant number, since it is smaller than the sum of its proper divisors (34113375108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22321032012 is a wasteful number, since it uses less digits than its factorization.

22321032012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129662 (or 129657 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22321032012 its reverse (21023012322), we get a palindrome (43344044334).

The spelling of 22321032012 in words is "twenty-two billion, three hundred twenty-one million, thirty-two thousand, twelve".