120256135205 has 16 divisors (see below), whose sum is σ = 144681997824. Its totient is φ = 95955277440.

The previous prime is 120256135169. The next prime is 120256135211. The reversal of 120256135205 is 502531652021.

It is not a de Polignac number, because 120256135205 - 2¹⁴ = 120256118821 is a prime.

It is a Duffinian number.

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, 12703304 + ... + 12712766.

It is an arithmetic number, because the mean of its divisors is an integer number (9042624864).

Almost surely, 2^120256135205 is an apocalyptic number.

It is an amenable number.

120256135205 is a deficient number, since it is larger than the sum of its proper divisors (24425862619).

120256135205 is an equidigital number, since it uses as much as digits as its factorization.

120256135205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 120256135205 its reverse (502531652021), we get a palindrome (622787787226).

The spelling of 120256135205 in words is "one hundred twenty billion, two hundred fifty-six million, one hundred thirty-five thousand, two hundred five".