122721995 has 8 divisors (see below), whose sum is σ = 160654320. Its totient is φ = 89252320.

The previous prime is 122721961. The next prime is 122722001. The reversal of 122721995 is 599127221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122721995 - 2¹² = 122717899 is a prime.

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, 1115600 + ... + 1115709.

It is an arithmetic number, because the mean of its divisors is an integer number (20081790).

Almost surely, 2^122721995 is an apocalyptic number.

122721995 is a deficient number, since it is larger than the sum of its proper divisors (37932325).

122721995 is a wasteful number, since it uses less digits than its factorization.

122721995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231325.

The product of its digits is 22680, while the sum is 38.

The square root of 122721995 is about 11077.9959830287. The cubic root of 122721995 is about 496.9440200259.

The spelling of 122721995 in words is "one hundred twenty-two million, seven hundred twenty-one thousand, nine hundred ninety-five".