211102200021021 has 16 divisors (see below), whose sum is σ = 289077923457600. Its totient is φ = 136930665587328.

The previous prime is 211102200020983. The next prime is 211102200021043. The reversal of 211102200021021 is 120120002201112.

It is not a de Polignac number, because 211102200021021 - 2¹¹ = 211102200018973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102200021091) 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, 29058810 + ... + 35589588.

It is an arithmetic number, because the mean of its divisors is an integer number (18067370216100).

Almost surely, 2^{211102200021021} is an apocalyptic number.

It is an amenable number.

211102200021021 is a deficient number, since it is larger than the sum of its proper divisors (77975723436579).

211102200021021 is a wasteful number, since it uses less digits than its factorization.

211102200021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6822028.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211102200021021 its reverse (120120002201112), we get a palindrome (331222202222133).

The spelling of 211102200021021 in words is "two hundred eleven trillion, one hundred two billion, two hundred million, twenty-one thousand, twenty-one".