2100221020101 has 16 divisors (see below), whose sum is σ = 2876025809664. Its totient is φ = 1362283038144.

The previous prime is 2100221020097. The next prime is 2100221020291. The reversal of 2100221020101 is 1010201220012.

It is not a de Polignac number, because 2100221020101 - 2² = 2100221020097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100221220101) 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, 9011695 + ... + 9241811.

It is an arithmetic number, because the mean of its divisors is an integer number (179751613104).

Almost surely, 2^{2100221020101} is an apocalyptic number.

It is an amenable number.

2100221020101 is a deficient number, since it is larger than the sum of its proper divisors (775804789563).

2100221020101 is a wasteful number, since it uses less digits than its factorization.

2100221020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312380.

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

Adding to 2100221020101 its reverse (1010201220012), we get a palindrome (3110422240113).

The spelling of 2100221020101 in words is "two trillion, one hundred billion, two hundred twenty-one million, twenty thousand, one hundred one".