222012132321 has 32 divisors (see below), whose sum is σ = 345442330368. Its totient is φ = 124197765120.

The previous prime is 222012132319. The next prime is 222012132367. The reversal of 222012132321 is 123231210222.

It is not a de Polignac number, because 222012132321 - 2¹ = 222012132319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (222012132371) 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, 290401 + ... + 726881.

It is an arithmetic number, because the mean of its divisors is an integer number (10795072824).

Almost surely, 2^222012132321 is an apocalyptic number.

222012132321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222012132321 is a deficient number, since it is larger than the sum of its proper divisors (123430198047).

222012132321 is a wasteful number, since it uses less digits than its factorization.

222012132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437001.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 222012132321 its reverse (123231210222), we get a palindrome (345243342543).

The spelling of 222012132321 in words is "two hundred twenty-two billion, twelve million, one hundred thirty-two thousand, three hundred twenty-one".