2120100010221 has 16 divisors (see below), whose sum is σ = 2852563896000. Its totient is φ = 1400563346688.

The previous prime is 2120100010183. The next prime is 2120100010283. The reversal of 2120100010221 is 1220100010212.

It is not a de Polignac number, because 2120100010221 - 2¹⁰ = 2120100009197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120100010197 and 2120100010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120100050221) 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, 5472556 + ... + 5847141.

It is an arithmetic number, because the mean of its divisors is an integer number (178285243500).

Almost surely, 2^{2120100010221} is an apocalyptic number.

It is an amenable number.

2120100010221 is a deficient number, since it is larger than the sum of its proper divisors (732463885779).

2120100010221 is a wasteful number, since it uses less digits than its factorization.

2120100010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11320268.

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

Adding to 2120100010221 its reverse (1220100010212), we get a palindrome (3340200020433).

Subtracting from 2120100010221 its reverse (1220100010212), we obtain a palindrome (900000000009).

The spelling of 2120100010221 in words is "two trillion, one hundred twenty billion, one hundred million, ten thousand, two hundred twenty-one".