2122111212 has 24 divisors (see below), whose sum is σ = 5332484976. Its totient is φ = 652957248.

The previous prime is 2122111183. The next prime is 2122111223. The reversal of 2122111212 is 2121112212.

It is a super-2 number, since 2×2122111212² = 9006711992192217888, 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 = 2122111191 and 2122111200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6801483 + ... + 6801794.

It is an arithmetic number, because the mean of its divisors is an integer number (222186874).

Almost surely, 2^2122111212 is an apocalyptic number.

It is an amenable number.

2122111212 is an abundant number, since it is smaller than the sum of its proper divisors (3210373764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2122111212 is a wasteful number, since it uses less digits than its factorization.

2122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13603297 (or 13603295 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 2122111212 is about 46066.3783251950. The cubic root of 2122111212 is about 1285.0579517334.

Adding to 2122111212 its reverse (2121112212), we get a palindrome (4243223424).

The spelling of 2122111212 in words is "two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".