120020129090 has 16 divisors (see below), whose sum is σ = 216517390200. Its totient is φ = 47901127680.

The previous prime is 120020129029. The next prime is 120020129171. The reversal of 120020129090 is 90921020021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 61485649369 + 58534479721 = 247963^2 + 241939^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13360781 + ... + 13369760.

Almost surely, 2^120020129090 is an apocalyptic number.

120020129090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120020129090 is a deficient number, since it is larger than the sum of its proper divisors (96497261110).

120020129090 is a wasteful number, since it uses less digits than its factorization.

120020129090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26730997.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 120020129090 in words is "one hundred twenty billion, twenty million, one hundred twenty-nine thousand, ninety".