391212222012122 has 16 divisors (see below), whose sum is σ = 683303288044032. Its totient is φ = 164498939713680.

The previous prime is 391212222012083. The next prime is 391212222012127. The reversal of 391212222012122 is 221210222212193.

It is a super-2 number, since 2×391212222012122² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (391212222012127) 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, 263620094954 + ... + 263620096437.

It is an arithmetic number, because the mean of its divisors is an integer number (42706455502752).

Almost surely, 2^{391212222012122} is an apocalyptic number.

391212222012122 is a deficient number, since it is larger than the sum of its proper divisors (292091066031910).

391212222012122 is a wasteful number, since it uses less digits than its factorization.

391212222012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527240191453.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 391212222012122 in words is "three hundred ninety-one trillion, two hundred twelve billion, two hundred twenty-two million, twelve thousand, one hundred twenty-two".