211022112121 has 4 divisors (see below), whose sum is σ = 214171695952. Its totient is φ = 207872528292.

The previous prime is 211022112101. The next prime is 211022112127. The reversal of 211022112121 is 121211220112.

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 211022112121 - 2⁹ = 211022111609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211022112095 and 211022112104.

It is not an unprimeable number, because it can be changed into a prime (211022112127) 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, 1574791815 + ... + 1574791948.

It is an arithmetic number, because the mean of its divisors is an integer number (53542923988).

Almost surely, 2^211022112121 is an apocalyptic number.

It is an amenable number.

211022112121 is a deficient number, since it is larger than the sum of its proper divisors (3149583831).

211022112121 is an equidigital number, since it uses as much as digits as its factorization.

211022112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149583830.

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

Adding to 211022112121 its reverse (121211220112), we get a palindrome (332233332233).

The spelling of 211022112121 in words is "two hundred eleven billion, twenty-two million, one hundred twelve thousand, one hundred twenty-one".