131221022330 has 32 divisors (see below), whose sum is σ = 237756397824. Its totient is φ = 52142216256.

The previous prime is 131221022311. The next prime is 131221022333. The reversal of 131221022330 is 33220122131.

It is not an unprimeable number, because it can be changed into a prime (131221022333) 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, 10800239 + ... + 10812381.

It is an arithmetic number, because the mean of its divisors is an integer number (7429887432).

Almost surely, 2^131221022330 is an apocalyptic number.

131221022330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131221022330 is a deficient number, since it is larger than the sum of its proper divisors (106535375494).

131221022330 is a wasteful number, since it uses less digits than its factorization.

131221022330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19190.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 131221022330 its reverse (33220122131), we get a palindrome (164441144461).

The spelling of 131221022330 in words is "one hundred thirty-one billion, two hundred twenty-one million, twenty-two thousand, three hundred thirty".