120201110120021 has 4 divisors (see below), whose sum is σ = 137372697280032. Its totient is φ = 103029522960012.

The previous prime is 120201110119999. The next prime is 120201110120059. The reversal of 120201110120021 is 120021011102021.

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 a cyclic number.

It is not a de Polignac number, because 120201110120021 - 2²² = 120201105925717 is a prime.

It is a super-2 number, since 2×120201110120021² (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 = 120201110119978 and 120201110120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201110120071) 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, 8585793579995 + ... + 8585793580008.

It is an arithmetic number, because the mean of its divisors is an integer number (34343174320008).

Almost surely, 2^{120201110120021} is an apocalyptic number.

It is an amenable number.

120201110120021 is a deficient number, since it is larger than the sum of its proper divisors (17171587160011).

120201110120021 is an equidigital number, since it uses as much as digits as its factorization.

120201110120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17171587160010.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120201110120021 its reverse (120021011102021), we get a palindrome (240222121222042).

The spelling of 120201110120021 in words is "one hundred twenty trillion, two hundred one billion, one hundred ten million, one hundred twenty thousand, twenty-one".