212111122 has 8 divisors (see below), whose sum is σ = 325926972. Its totient is φ = 103468800.

The previous prime is 212111111. The next prime is 212111147. The reversal of 212111122 is 221111212.

It can be written as a sum of positive squares in 2 ways, for example, as 208831401 + 3279721 = 14451^2 + 1811^2 .

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

It is a super-2 number, since 2×212111122² = 89982256152197768, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1293279 + ... + 1293442.

Almost surely, 2^212111122 is an apocalyptic number.

212111122 is a deficient number, since it is larger than the sum of its proper divisors (113815850).

212111122 is a wasteful number, since it uses less digits than its factorization.

212111122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586764.

The product of its digits is 16, while the sum is 13.

The square root of 212111122 is about 14564.0352237970. The cubic root of 212111122 is about 596.3773585049.

Adding to 212111122 its reverse (221111212), we get a palindrome (433222334).

The spelling of 212111122 in words is "two hundred twelve million, one hundred eleven thousand, one hundred twenty-two".