120002101020021 has 16 divisors (see below), whose sum is σ = 180567424733760. Its totient is φ = 70220665173120.

The previous prime is 120002101020019. The next prime is 120002101020029. The reversal of 120002101020021 is 120020101200021.

It is not a de Polignac number, because 120002101020021 - 2¹ = 120002101020019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120002101019979 and 120002101020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002101020029) 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, 62697021520 + ... + 62697023433.

It is an arithmetic number, because the mean of its divisors is an integer number (11285464045860).

Almost surely, 2^{120002101020021} is an apocalyptic number.

120002101020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120002101020021 is a deficient number, since it is larger than the sum of its proper divisors (60565323713739).

120002101020021 is a wasteful number, since it uses less digits than its factorization.

120002101020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125394044996.

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

Adding to 120002101020021 its reverse (120020101200021), we get a palindrome (240022202220042).

The spelling of 120002101020021 in words is "one hundred twenty trillion, two billion, one hundred one million, twenty thousand, twenty-one".