120511908997 has 4 divisors (see below), whose sum is σ = 120720769036. Its totient is φ = 120303048960.

The previous prime is 120511908953. The next prime is 120511909019. The reversal of 120511908997 is 799809115021.

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 114439447521 + 6072461476 = 338289^2 + 77926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120511908997 is a prime.

It is a super-3 number, since 3×120511908997³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120511908947) 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, 104429154 + ... + 104430307.

It is an arithmetic number, because the mean of its divisors is an integer number (30180192259).

Almost surely, 2^120511908997 is an apocalyptic number.

It is an amenable number.

120511908997 is a deficient number, since it is larger than the sum of its proper divisors (208860039).

120511908997 is an equidigital number, since it uses as much as digits as its factorization.

120511908997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208860038.

The product of its (nonzero) digits is 408240, while the sum is 52.

The spelling of 120511908997 in words is "one hundred twenty billion, five hundred eleven million, nine hundred eight thousand, nine hundred ninety-seven".