251022106141 has 4 divisors (see below), whose sum is σ = 251039057884. Its totient is φ = 251005154400.

The previous prime is 251022106121. The next prime is 251022106169. The reversal of 251022106141 is 141601220152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181416364900 + 69605741241 = 425930^2 + 263829^2 .

It is a cyclic number.

It is not a de Polignac number, because 251022106141 - 2²¹ = 251020008989 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 (251022106121) 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, 8453640 + ... + 8483281.

It is an arithmetic number, because the mean of its divisors is an integer number (62759764471).

Almost surely, 2^251022106141 is an apocalyptic number.

It is an amenable number.

251022106141 is a deficient number, since it is larger than the sum of its proper divisors (16951743).

251022106141 is a wasteful number, since it uses less digits than its factorization.

251022106141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16951742.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 251022106141 its reverse (141601220152), we get a palindrome (392623326293).

The spelling of 251022106141 in words is "two hundred fifty-one billion, twenty-two million, one hundred six thousand, one hundred forty-one".