1231212102202 has 32 divisors (see below), whose sum is σ = 2058508512000. Its totient is φ = 548863423488.

The previous prime is 1231212102173. The next prime is 1231212102209. The reversal of 1231212102202 is 2022012121321.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1231212102202.

It is not an unprimeable number, because it can be changed into a prime (1231212102209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11388799 + ... + 11496397.

It is an arithmetic number, because the mean of its divisors is an integer number (64328391000).

Almost surely, 2^{1231212102202} is an apocalyptic number.

1231212102202 is a deficient number, since it is larger than the sum of its proper divisors (827296409798).

1231212102202 is a wasteful number, since it uses less digits than its factorization.

1231212102202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125350.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1231212102202 its reverse (2022012121321), we get a palindrome (3253224223523).

The spelling of 1231212102202 in words is "one trillion, two hundred thirty-one billion, two hundred twelve million, one hundred two thousand, two hundred two".