2120102011021 has 8 divisors (see below), whose sum is σ = 2124762016320. Its totient is φ = 2115447065472.

The previous prime is 2120102011007. The next prime is 2120102011063. The reversal of 2120102011021 is 1201102010212.

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 2120102011021 - 2³⁷ = 1982663057549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120102010992 and 2120102011010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120102111021) 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, 425380 + ... + 2102653.

It is an arithmetic number, because the mean of its divisors is an integer number (265595252040).

Almost surely, 2^{2120102011021} is an apocalyptic number.

It is an amenable number.

2120102011021 is a deficient number, since it is larger than the sum of its proper divisors (4660005299).

2120102011021 is a wasteful number, since it uses less digits than its factorization.

2120102011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529875.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2120102011021 its reverse (1201102010212), we get a palindrome (3321204021233).

The spelling of 2120102011021 in words is "two trillion, one hundred twenty billion, one hundred two million, eleven thousand, twenty-one".