211102112221 has 64 divisors (see below), whose sum is σ = 290374318080. Its totient is φ = 148134147840.

The previous prime is 211102112209. The next prime is 211102112239. The reversal of 211102112221 is 122211201112.

It is not a de Polignac number, because 211102112221 - 2²³ = 211093723613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211102112195 and 211102112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102118221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43858411 + ... + 43863223.

It is an arithmetic number, because the mean of its divisors is an integer number (4537098720).

Almost surely, 2^211102112221 is an apocalyptic number.

It is an amenable number.

211102112221 is a deficient number, since it is larger than the sum of its proper divisors (79272205859).

211102112221 is a wasteful number, since it uses less digits than its factorization.

211102112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906.

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

Adding to 211102112221 its reverse (122211201112), we get a palindrome (333313313333).

It can be divided in two parts, 211102 and 112221, that added together give a palindrome (323323).

The spelling of 211102112221 in words is "two hundred eleven billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".