120021002000121 has 4 divisors (see below), whose sum is σ = 160028002666832. Its totient is φ = 80014001333412.

The previous prime is 120021002000117. The next prime is 120021002000129. The reversal of 120021002000121 is 121000200120021.

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 not a de Polignac number, because 120021002000121 - 2² = 120021002000117 is a prime.

It is a super-2 number, since 2×120021002000121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021002000097 and 120021002000106.

It is not an unprimeable number, because it can be changed into a prime (120021002000129) 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, 20003500333351 + ... + 20003500333356.

It is an arithmetic number, because the mean of its divisors is an integer number (40007000666708).

Almost surely, 2^{120021002000121} is an apocalyptic number.

It is an amenable number.

120021002000121 is a deficient number, since it is larger than the sum of its proper divisors (40007000666711).

120021002000121 is an equidigital number, since it uses as much as digits as its factorization.

120021002000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40007000666710.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120021002000121 its reverse (121000200120021), we get a palindrome (241021202120142).

The spelling of 120021002000121 in words is "one hundred twenty trillion, twenty-one billion, two million, one hundred twenty-one", and thus it is an aban number.