2131220232212 has 12 divisors (see below), whose sum is σ = 3736529375796. Its totient is φ = 1063640410560.

The previous prime is 2131220232209. The next prime is 2131220232241. The reversal of 2131220232212 is 2122320221312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 803669218576 + 1327551013636 = 896476^2 + 1152194^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492423953 + ... + 492428280.

It is an arithmetic number, because the mean of its divisors is an integer number (311377447983).

Almost surely, 2^{2131220232212} is an apocalyptic number.

It is an amenable number.

2131220232212 is a deficient number, since it is larger than the sum of its proper divisors (1605309143584).

2131220232212 is a wasteful number, since it uses less digits than its factorization.

2131220232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984852778 (or 984852776 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2131220232212 its reverse (2122320221312), we get a palindrome (4253540453524).

The spelling of 2131220232212 in words is "two trillion, one hundred thirty-one billion, two hundred twenty million, two hundred thirty-two thousand, two hundred twelve".