120100200121 has 16 divisors (see below), whose sum is σ = 132459522048. Its totient is φ = 107982604800.

The previous prime is 120100200053. The next prime is 120100200131. The reversal of 120100200121 is 121002001021.

It is a cyclic number.

It is not a de Polignac number, because 120100200121 - 2¹¹ = 120100198073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120100200098 and 120100200107.

It is not an unprimeable number, because it can be changed into a prime (120100200131) 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, 1555336 + ... + 1630726.

It is an arithmetic number, because the mean of its divisors is an integer number (8278720128).

Almost surely, 2^120100200121 is an apocalyptic number.

120100200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120100200121 is a deficient number, since it is larger than the sum of its proper divisors (12359321927).

120100200121 is a wasteful number, since it uses less digits than its factorization.

120100200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76992.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120100200121 its reverse (121002001021), we get a palindrome (241102201142).

Subtracting 120100200121 from its reverse (121002001021), we obtain a square (901800900 = 30030²).

The spelling of 120100200121 in words is "one hundred twenty billion, one hundred million, two hundred thousand, one hundred twenty-one".