120102210000021 has 8 divisors (see below), whose sum is σ = 160201990424224. Its totient is φ = 80035284787920.

The previous prime is 120102209999987. The next prime is 120102210000037. The reversal of 120102210000021 is 120000012201021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120102210000021 - 2¹⁹ = 120102209475733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102209999961 and 120102210000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120102210020021) 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, 8213794495 + ... + 8213809116.

It is an arithmetic number, because the mean of its divisors is an integer number (20025248803028).

Almost surely, 2^{120102210000021} is an apocalyptic number.

It is an amenable number.

120102210000021 is a deficient number, since it is larger than the sum of its proper divisors (40099780424203).

120102210000021 is a wasteful number, since it uses less digits than its factorization.

120102210000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16427606051.

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

Adding to 120102210000021 its reverse (120000012201021), we get a palindrome (240102222201042).

The spelling of 120102210000021 in words is "one hundred twenty trillion, one hundred two billion, two hundred ten million, twenty-one", and thus it is an aban number.