342131213221 has 16 divisors (see below), whose sum is σ = 411799657600. Its totient is φ = 277676900928.

The previous prime is 342131213209. The next prime is 342131213231. The reversal of 342131213221 is 122312131243.

It is not a de Polignac number, because 342131213221 - 2¹³ = 342131205029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342131213231) 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, 408306 + ... + 922483.

It is an arithmetic number, because the mean of its divisors is an integer number (25737478600).

Almost surely, 2^342131213221 is an apocalyptic number.

It is an amenable number.

342131213221 is a deficient number, since it is larger than the sum of its proper divisors (69668444379).

342131213221 is a wasteful number, since it uses less digits than its factorization.

342131213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332748.

The product of its digits is 1728, while the sum is 25.

Adding to 342131213221 its reverse (122312131243), we get a palindrome (464443344464).

The spelling of 342131213221 in words is "three hundred forty-two billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred twenty-one".