10211112200021 has 4 divisors (see below), whose sum is σ = 10214878750944. Its totient is φ = 10207345649100.

The previous prime is 10211112199997. The next prime is 10211112200033. The reversal of 10211112200021 is 12000221111201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10211112200021 - 2²⁶ = 10211045091157 is a prime.

It is a super-2 number, since 2×10211112200021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10211112199969 and 10211112200005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211112208021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883271395 + ... + 1883276816.

It is an arithmetic number, because the mean of its divisors is an integer number (2553719687736).

Almost surely, 2^{10211112200021} is an apocalyptic number.

It is an amenable number.

10211112200021 is a deficient number, since it is larger than the sum of its proper divisors (3766550923).

10211112200021 is an equidigital number, since it uses as much as digits as its factorization.

10211112200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766550922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10211112200021 its reverse (12000221111201), we get a palindrome (22211333311222).

The spelling of 10211112200021 in words is "ten trillion, two hundred eleven billion, one hundred twelve million, two hundred thousand, twenty-one".