31212211202102 has 32 divisors (see below), whose sum is σ = 53630487892800. Its totient is φ = 13345707110400.

The previous prime is 31212211202093. The next prime is 31212211202141. The reversal of 31212211202102 is 20120211221213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73970708 + ... + 74391464.

It is an arithmetic number, because the mean of its divisors is an integer number (1675952746650).

Almost surely, 2^{31212211202102} is an apocalyptic number.

31212211202102 is a deficient number, since it is larger than the sum of its proper divisors (22418276690698).

31212211202102 is a wasteful number, since it uses less digits than its factorization.

31212211202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433016.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 31212211202102 its reverse (20120211221213), we get a palindrome (51332422423315).

The spelling of 31212211202102 in words is "thirty-one trillion, two hundred twelve billion, two hundred eleven million, two hundred two thousand, one hundred two".