120200121099 has 8 divisors (see below), whose sum is σ = 178074253520. Its totient is φ = 80133414048.

The previous prime is 120200121061. The next prime is 120200121113. The reversal of 120200121099 is 990121002021.

It is not a de Polignac number, because 120200121099 - 2²⁷ = 120065903371 is a prime.

It is a super-2 number, since 2×120200121099² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4451856337 = 120200121099 / (1 + 2 + 0 + 2 + 0 + 0 + 1 + 2 + 1 + 0 + 9 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120200121499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225928142 + ... + 2225928195.

It is an arithmetic number, because the mean of its divisors is an integer number (22259281690).

Almost surely, 2^120200121099 is an apocalyptic number.

120200121099 is a deficient number, since it is larger than the sum of its proper divisors (57874132421).

120200121099 is an equidigital number, since it uses as much as digits as its factorization.

120200121099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451856346 (or 4451856340 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 120200121099 in words is "one hundred twenty billion, two hundred million, one hundred twenty-one thousand, ninety-nine".