131220022002 has 32 divisors (see below), whose sum is σ = 263916969984. Its totient is φ = 43494032400.

The previous prime is 131220021953. The next prime is 131220022013. The reversal of 131220022002 is 200220022131.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 3108763 + ... + 3150689.

It is an arithmetic number, because the mean of its divisors is an integer number (8247405312).

Almost surely, 2^131220022002 is an apocalyptic number.

131220022002 is an abundant number, since it is smaller than the sum of its proper divisors (132696947982).

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

131220022002 is a wasteful number, since it uses less digits than its factorization.

131220022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44854.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 131220022002 its reverse (200220022131), we get a palindrome (331440044133).

The spelling of 131220022002 in words is "one hundred thirty-one billion, two hundred twenty million, twenty-two thousand, two".