31212101123202 has 16 divisors (see below), whose sum is σ = 62769087343872. Its totient is φ = 10346552858160.

The previous prime is 31212101123197. The next prime is 31212101123219. The reversal of 31212101123202 is 20232110121213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14370211218 + ... + 14370213389.

It is an arithmetic number, because the mean of its divisors is an integer number (3923067958992).

Almost surely, 2^{31212101123202} is an apocalyptic number.

31212101123202 is an abundant number, since it is smaller than the sum of its proper divisors (31556986220670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31212101123202 is a wasteful number, since it uses less digits than its factorization.

31212101123202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28740424793.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31212101123202 its reverse (20232110121213), we get a palindrome (51444211244415).

The spelling of 31212101123202 in words is "thirty-one trillion, two hundred twelve billion, one hundred one million, one hundred twenty-three thousand, two hundred two".