122111212 has 6 divisors (see below), whose sum is σ = 213694628. Its totient is φ = 61055604.

The previous prime is 122111189. The next prime is 122111219. The reversal of 122111212 is 212111221.

It is a super-2 number, since 2×122111212² = 29822296192217888, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 122111192 and 122111201.

It is not an unprimeable number, because it can be changed into a prime (122111219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15263898 + ... + 15263905.

Almost surely, 2^122111212 is an apocalyptic number.

It is an amenable number.

122111212 is a deficient number, since it is larger than the sum of its proper divisors (91583416).

122111212 is a wasteful number, since it uses less digits than its factorization.

122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30527807 (or 30527805 counting only the distinct ones).

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

The square root of 122111212 is about 11050.3942011134. The cubic root of 122111212 is about 496.1182242897.

Adding to 122111212 its reverse (212111221), we get a palindrome (334222433).

Subtracting 122111212 from its reverse (212111221), we obtain a palindrome (90000009).

The spelling of 122111212 in words is "one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".