131211220222 has 16 divisors (see below), whose sum is σ = 197241541200. Its totient is φ = 65464090560.

The previous prime is 131211220213. The next prime is 131211220229. The reversal of 131211220222 is 222022112131.

It is a self number, because there is not a number n which added to its sum of digits gives 131211220222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131211220229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7492897 + ... + 7510387.

It is an arithmetic number, because the mean of its divisors is an integer number (12327596325).

Almost surely, 2^131211220222 is an apocalyptic number.

131211220222 is a deficient number, since it is larger than the sum of its proper divisors (66030320978).

131211220222 is a wasteful number, since it uses less digits than its factorization.

131211220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25371.

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

Adding to 131211220222 its reverse (222022112131), we get a palindrome (353233332353).

The spelling of 131211220222 in words is "one hundred thirty-one billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty-two".