222312029991 has 16 divisors (see below), whose sum is σ = 308280806400. Its totient is φ = 142377045408.

The previous prime is 222312029971. The next prime is 222312029993. The reversal of 222312029991 is 199920213222.

It is not a de Polignac number, because 222312029991 - 2²⁶ = 222244921127 is a prime.

It is a super-3 number, since 3×222312029991³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222312029993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12667251 + ... + 12684788.

It is an arithmetic number, because the mean of its divisors is an integer number (19267550400).

Almost surely, 2^222312029991 is an apocalyptic number.

222312029991 is a deficient number, since it is larger than the sum of its proper divisors (85968776409).

222312029991 is a wasteful number, since it uses less digits than its factorization.

222312029991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25352158.

The product of its (nonzero) digits is 69984, while the sum is 42.

It can be divided in two parts, 222 and 312029991, that added together give a palindrome (312030213).

The spelling of 222312029991 in words is "two hundred twenty-two billion, three hundred twelve million, twenty-nine thousand, nine hundred ninety-one".