31012200120222 has 12 divisors (see below), whose sum is σ = 67193100260520. Its totient is φ = 10337400040068.

The previous prime is 31012200120179. The next prime is 31012200120233. The reversal of 31012200120222 is 22202100221013.

31012200120222 is a `hidden beast` number, since 3 + 101 + 220 + 0 + 120 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1722900006679 = 31012200120222 / (3 + 1 + 0 + 1 + 2 + 2 + 0 + 0 + 1 + 2 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31012200120195 and 31012200120204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 861450003322 + ... + 861450003357.

It is an arithmetic number, because the mean of its divisors is an integer number (5599425021710).

Almost surely, 2^{31012200120222} is an apocalyptic number.

31012200120222 is an abundant number, since it is smaller than the sum of its proper divisors (36180900140298).

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

31012200120222 is a wasteful number, since it uses less digits than its factorization.

31012200120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722900006687 (or 1722900006684 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 31012200120222 its reverse (22202100221013), we get a palindrome (53214300341235).

The spelling of 31012200120222 in words is "thirty-one trillion, twelve billion, two hundred million, one hundred twenty thousand, two hundred twenty-two".