211112002210021 has 4 divisors (see below), whose sum is σ = 230304002410944. Its totient is φ = 191920002009100.

The previous prime is 211112002210013. The next prime is 211112002210027. The reversal of 211112002210021 is 120012200211112.

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 211112002210021 - 2³ = 211112002210013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211112002209977 and 211112002210004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211112002210027) 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, 9596000100445 + ... + 9596000100466.

It is an arithmetic number, because the mean of its divisors is an integer number (57576000602736).

Almost surely, 2^{211112002210021} is an apocalyptic number.

It is an amenable number.

211112002210021 is a deficient number, since it is larger than the sum of its proper divisors (19192000200923).

211112002210021 is a wasteful number, since it uses less digits than its factorization.

211112002210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19192000200922.

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

Adding to 211112002210021 its reverse (120012200211112), we get a palindrome (331124202421133).

The spelling of 211112002210021 in words is "two hundred eleven trillion, one hundred twelve billion, two million, two hundred ten thousand, twenty-one".