2121314412 has 48 divisors (see below), whose sum is σ = 5659137792. Its totient is φ = 605843520.

The previous prime is 2121314411. The next prime is 2121314423. The reversal of 2121314412 is 2144131212.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is not an unprimeable number, because it can be changed into a prime (2121314411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340558 + ... + 346730.

It is an arithmetic number, because the mean of its divisors is an integer number (117898704).

Almost surely, 2^2121314412 is an apocalyptic number.

It is an amenable number.

2121314412 is an abundant number, since it is smaller than the sum of its proper divisors (3537823380).

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

2121314412 is a wasteful number, since it uses less digits than its factorization.

2121314412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10278 (or 10276 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 2121314412 is about 46057.7291233513. The cubic root of 2121314412 is about 1284.8970958287.

Adding to 2121314412 its reverse (2144131212), we get a palindrome (4265445624).

The spelling of 2121314412 in words is "two billion, one hundred twenty-one million, three hundred fourteen thousand, four hundred twelve".