211101202210021 has 8 divisors (see below), whose sum is σ = 211199253479424. Its totient is φ = 211003165445520.

The previous prime is 211101202210009. The next prime is 211101202210061. The reversal of 211101202210021 is 120012202101112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211101202210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211101202209977 and 211101202210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101202210061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25542556 + ... + 32781466.

It is an arithmetic number, because the mean of its divisors is an integer number (26399906684928).

Almost surely, 2^{211101202210021} is an apocalyptic number.

It is an amenable number.

211101202210021 is a deficient number, since it is larger than the sum of its proper divisors (98051269403).

211101202210021 is a wasteful number, since it uses less digits than its factorization.

211101202210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7252451.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211101202210021 its reverse (120012202101112), we get a palindrome (331113404311133).

The spelling of 211101202210021 in words is "two hundred eleven trillion, one hundred one billion, two hundred two million, two hundred ten thousand, twenty-one".