131202211223420 has 24 divisors (see below), whose sum is σ = 275524863438384. Its totient is φ = 52480842609536.

The previous prime is 131202211223411. The next prime is 131202211223437. The reversal of 131202211223420 is 24322112202131.

It is a self number, because there is not a number n which added to its sum of digits gives 131202211223420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39979727 + ... + 43136793.

It is an arithmetic number, because the mean of its divisors is an integer number (11480202643266).

Almost surely, 2^{131202211223420} is an apocalyptic number.

131202211223420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131202211223420 is an abundant number, since it is smaller than the sum of its proper divisors (144322652214964).

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

131202211223420 is a wasteful number, since it uses less digits than its factorization.

131202211223420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5234989 (or 5234987 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 131202211223420 its reverse (24322112202131), we get a palindrome (155524323425551).

The spelling of 131202211223420 in words is "one hundred thirty-one trillion, two hundred two billion, two hundred eleven million, two hundred twenty-three thousand, four hundred twenty".