2101120000221 has 48 divisors (see below), whose sum is σ = 3202586374400. Its totient is φ = 1223305649280.

The previous prime is 2101120000141. The next prime is 2101120000271. The reversal of 2101120000221 is 1220000211012.

It is not a de Polignac number, because 2101120000221 - 2⁷ = 2101120000093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101120000197 and 2101120000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101120000271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70935 + ... + 2051163.

Almost surely, 2^{2101120000221} is an apocalyptic number.

It is an amenable number.

2101120000221 is a deficient number, since it is larger than the sum of its proper divisors (1101466374179).

2101120000221 is a wasteful number, since it uses less digits than its factorization.

2101120000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980370 (or 1980359 counting only the distinct ones).

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

Adding to 2101120000221 its reverse (1220000211012), we get a palindrome (3321120211233).

The spelling of 2101120000221 in words is "two trillion, one hundred one billion, one hundred twenty million, two hundred twenty-one", and thus it is an aban number.