312201131122 has 4 divisors (see below), whose sum is σ = 468301696686. Its totient is φ = 156100565560.

The previous prime is 312201131111. The next prime is 312201131159. The reversal of 312201131122 is 221131102213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 185443058161 + 126758072961 = 430631^2 + 356031^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312201131122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78050282779 + ... + 78050282782.

Almost surely, 2^312201131122 is an apocalyptic number.

312201131122 is a deficient number, since it is larger than the sum of its proper divisors (156100565564).

312201131122 is a wasteful number, since it uses less digits than its factorization.

312201131122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156100565563.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312201131122 its reverse (221131102213), we get a palindrome (533332233335).

The spelling of 312201131122 in words is "three hundred twelve billion, two hundred one million, one hundred thirty-one thousand, one hundred twenty-two".