120021220121 has 8 divisors (see below), whose sum is σ = 130935759744. Its totient is φ = 109107267120.

The previous prime is 120021220117. The next prime is 120021220211. The reversal of 120021220121 is 121022120021.

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 120021220121 - 2² = 120021220117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021220096 and 120021220105.

It is not an unprimeable number, because it can be changed into a prime (120021220621) 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, 356096 + ... + 605678.

It is an arithmetic number, because the mean of its divisors is an integer number (16366969968).

Almost surely, 2^120021220121 is an apocalyptic number.

120021220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120021220121 is a deficient number, since it is larger than the sum of its proper divisors (10914539623).

120021220121 is a wasteful number, since it uses less digits than its factorization.

120021220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293311.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120021220121 its reverse (121022120021), we get a palindrome (241043340142).

The spelling of 120021220121 in words is "one hundred twenty billion, twenty-one million, two hundred twenty thousand, one hundred twenty-one".