312212012102 has 4 divisors (see below), whose sum is σ = 468318018156. Its totient is φ = 156106006050.

The previous prime is 312212012083. The next prime is 312212012111. The reversal of 312212012102 is 201210212213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201210212213 = 701 ⋅287033113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78053003024 + ... + 78053003027.

It is an arithmetic number, because the mean of its divisors is an integer number (117079504539).

Almost surely, 2^312212012102 is an apocalyptic number.

312212012102 is a deficient number, since it is larger than the sum of its proper divisors (156106006054).

312212012102 is a wasteful number, since it uses less digits than its factorization.

312212012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156106006053.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 312212012102 its reverse (201210212213), we get a palindrome (513422224315).

The spelling of 312212012102 in words is "three hundred twelve billion, two hundred twelve million, twelve thousand, one hundred two".