2100202120221 has 8 divisors (see below), whose sum is σ = 2890600767744. Its totient is φ = 1354969109760.

The previous prime is 2100202120217. The next prime is 2100202120259. The reversal of 2100202120221 is 1220212020012.

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

It is not a de Polignac number, because 2100202120221 - 2² = 2100202120217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2100202120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100202120271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11291409156 + ... + 11291409341.

It is an arithmetic number, because the mean of its divisors is an integer number (361325095968).

Almost surely, 2^{2100202120221} is an apocalyptic number.

It is an amenable number.

2100202120221 is a deficient number, since it is larger than the sum of its proper divisors (790398647523).

2100202120221 is a wasteful number, since it uses less digits than its factorization.

2100202120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22582818531.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2100202120221 its reverse (1220212020012), we get a palindrome (3320414140233).

The spelling of 2100202120221 in words is "two trillion, one hundred billion, two hundred two million, one hundred twenty thousand, two hundred twenty-one".