2101122212 has 24 divisors (see below), whose sum is σ = 4203314304. Its totient is φ = 900251712.

The previous prime is 2101122187. The next prime is 2101122217. The reversal of 2101122212 is 2122211012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (2101122217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147968 + ... + 161544.

It is an arithmetic number, because the mean of its divisors is an integer number (175138096).

Almost surely, 2^2101122212 is an apocalyptic number.

It is an amenable number.

2101122212 is an abundant number, since it is smaller than the sum of its proper divisors (2102192092).

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

2101122212 is a wasteful number, since it uses less digits than its factorization.

2101122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19115 (or 19113 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2101122212 is about 45837.9996509446. Note that the first 3 decimals coincide. The cubic root of 2101122212 is about 1280.8072325107.

Adding to 2101122212 its product of nonzero digits (32), we get a square (2101122244 = 45838²).

Adding to 2101122212 its reverse (2122211012), we get a palindrome (4223333224).

The spelling of 2101122212 in words is "two billion, one hundred one million, one hundred twenty-two thousand, two hundred twelve".