120001209999999 has 16 divisors (see below), whose sum is σ = 160039062208512. Its totient is φ = 79982083788768.

The previous prime is 120001209999961. The next prime is 120001210000037. The reversal of 120001209999999 is 999999902100021.

It is an interprime number because it is at equal distance from previous prime (120001209999961) and next prime (120001210000037).

It is not a de Polignac number, because 120001209999999 - 2¹³ = 120001209991807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001209999949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329000322 + ... + 329364864.

It is an arithmetic number, because the mean of its divisors is an integer number (10002441388032).

Almost surely, 2^{120001209999999} is an apocalyptic number.

120001209999999 is a deficient number, since it is larger than the sum of its proper divisors (40037852208513).

120001209999999 is a wasteful number, since it uses less digits than its factorization.

120001209999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389926.

The product of its (nonzero) digits is 19131876, while the sum is 69.

The spelling of 120001209999999 in words is "one hundred twenty trillion, one billion, two hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".