2212121120 has 48 divisors (see below), whose sum is σ = 5701243968. Its totient is φ = 804407040.

The previous prime is 2212121099. The next prime is 2212121137. The reversal of 2212121120 is 211212122.

It is a junction number, because it is equal to n+sod(n) for n = 2212121095 and 2212121104.

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, 626684 + ... + 630203.

It is an arithmetic number, because the mean of its divisors is an integer number (118775916).

Almost surely, 2^2212121120 is an apocalyptic number.

2212121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212121120 is an abundant number, since it is smaller than the sum of its proper divisors (3489122848).

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

2212121120 is a wasteful number, since it uses less digits than its factorization.

2212121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256913 (or 1256905 counting only the distinct ones).

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

The square root of 2212121120 is about 47033.1916841713. The cubic root of 2212121120 is about 1302.9756530687.

Adding to 2212121120 its reverse (211212122), we get a palindrome (2423333242).

The spelling of 2212121120 in words is "two billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twenty".