120121210100999 has 8 divisors (see below), whose sum is σ = 120164024043648. Its totient is φ = 120078398103160.

The previous prime is 120121210100993. The next prime is 120121210101037. The reversal of 120121210100999 is 999001012121021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120121210100999 - 2⁸ = 120121210100743 is a prime.

It is a super-2 number, since 2×120121210100999² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121210100993) 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, 129211574 + ... + 130137900.

It is an arithmetic number, because the mean of its divisors is an integer number (15020503005456).

Almost surely, 2^{120121210100999} is an apocalyptic number.

120121210100999 is a deficient number, since it is larger than the sum of its proper divisors (42813942649).

120121210100999 is an equidigital number, since it uses as much as digits as its factorization.

120121210100999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972405.

The product of its (nonzero) digits is 5832, while the sum is 38.

The spelling of 120121210100999 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred ten million, one hundred thousand, nine hundred ninety-nine".