351241250131221 has 4 divisors (see below), whose sum is σ = 468321666841632. Its totient is φ = 234160833420812.

The previous prime is 351241250131217. The next prime is 351241250131267. The reversal of 351241250131221 is 122131052142153.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 351241250131221 - 2² = 351241250131217 is a prime.

It is a super-2 number, since 2×351241250131221² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351241250138221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58540208355201 + ... + 58540208355206.

It is an arithmetic number, because the mean of its divisors is an integer number (117080416710408).

Almost surely, 2^{351241250131221} is an apocalyptic number.

It is an amenable number.

351241250131221 is a deficient number, since it is larger than the sum of its proper divisors (117080416710411).

351241250131221 is a wasteful number, since it uses less digits than its factorization.

351241250131221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117080416710410.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 351241250131221 in words is "three hundred fifty-one trillion, two hundred forty-one billion, two hundred fifty million, one hundred thirty-one thousand, two hundred twenty-one".