120000100121 has 4 divisors (see below), whose sum is σ = 130909200144. Its totient is φ = 109091000100.

The previous prime is 120000100109. The next prime is 120000100133. The reversal of 120000100121 is 121001000021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (120000100109) and next prime (120000100133).

It is a cyclic number.

It is not a de Polignac number, because 120000100121 - 2⁶ = 120000100057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120000100099 and 120000100108.

It is not an unprimeable number, because it can be changed into a prime (120000102121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5454549995 + ... + 5454550016.

It is an arithmetic number, because the mean of its divisors is an integer number (32727300036).

Almost surely, 2^120000100121 is an apocalyptic number.

120000100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120000100121 is a deficient number, since it is larger than the sum of its proper divisors (10909100023).

120000100121 is a wasteful number, since it uses less digits than its factorization.

120000100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10909100022.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 120000100121 its reverse (121001000021), we get a palindrome (241001100142).

The spelling of 120000100121 in words is "one hundred twenty billion, one hundred thousand, one hundred twenty-one".