120215877 has 4 divisors (see below), whose sum is σ = 160287840. Its totient is φ = 80143916.

The previous prime is 120215873. The next prime is 120215881. The reversal of 120215877 is 778512021.

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 an interprime number because it is at equal distance from previous prime (120215873) and next prime (120215881).

It is a cyclic number.

It is not a de Polignac number, because 120215877 - 2² = 120215873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120215873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20035977 + ... + 20035982.

It is an arithmetic number, because the mean of its divisors is an integer number (40071960).

Almost surely, 2^120215877 is an apocalyptic number.

It is an amenable number.

120215877 is a deficient number, since it is larger than the sum of its proper divisors (40071963).

120215877 is an equidigital number, since it uses as much as digits as its factorization.

120215877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40071962.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 120215877 is about 10964.3001144624. The cubic root of 120215877 is about 493.5380146025.

Adding to 120215877 its reverse (778512021), we get a palindrome (898727898).

The spelling of 120215877 in words is "one hundred twenty million, two hundred fifteen thousand, eight hundred seventy-seven".