2121181951295 has 16 divisors (see below), whose sum is σ = 2776862269440. Its totient is φ = 1542654304800.

The previous prime is 2121181951279. The next prime is 2121181951417. The reversal of 2121181951295 is 5921591811212.

It is a happy number.

It is not a de Polignac number, because 2121181951295 - 2⁴ = 2121181951279 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3890726 + ... + 4402284.

It is an arithmetic number, because the mean of its divisors is an integer number (173553891840).

Almost surely, 2^{2121181951295} is an apocalyptic number.

2121181951295 is a deficient number, since it is larger than the sum of its proper divisors (655680318145).

2121181951295 is a wasteful number, since it uses less digits than its factorization.

2121181951295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586966.

The product of its digits is 129600, while the sum is 47.

The spelling of 2121181951295 in words is "two trillion, one hundred twenty-one billion, one hundred eighty-one million, nine hundred fifty-one thousand, two hundred ninety-five".