120100012221999 has 16 divisors (see below), whose sum is σ = 160225762533120. Its totient is φ = 80020470572160.

The previous prime is 120100012221961. The next prime is 120100012222033. The reversal of 120100012221999 is 999122210001021.

It is a happy number.

It is not a de Polignac number, because 120100012221999 - 2¹³ = 120100012213807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120100012221899) 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, 236663367 + ... + 237170295.

It is an arithmetic number, because the mean of its divisors is an integer number (10014110158320).

Almost surely, 2^{120100012221999} is an apocalyptic number.

120100012221999 is a deficient number, since it is larger than the sum of its proper divisors (40125750311121).

120100012221999 is a wasteful number, since it uses less digits than its factorization.

120100012221999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552350.

The product of its (nonzero) digits is 11664, while the sum is 39.

The spelling of 120100012221999 in words is "one hundred twenty trillion, one hundred billion, twelve million, two hundred twenty-one thousand, nine hundred ninety-nine".