2120431212 has 36 divisors (see below), whose sum is σ = 5424564600. Its totient is φ = 698293632.

The previous prime is 2120431211. The next prime is 2120431223. The reversal of 2120431212 is 2121340212.

It is a happy number.

2120431212 is a `hidden beast` number, since 2 + 1 + 20 + 431 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2120431211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351837 + ... + 357812.

It is an arithmetic number, because the mean of its divisors is an integer number (150682350).

Almost surely, 2^2120431212 is an apocalyptic number.

It is an amenable number.

2120431212 is an abundant number, since it is smaller than the sum of its proper divisors (3304133388).

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

2120431212 is a wasteful number, since it uses less digits than its factorization.

2120431212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709742 (or 709737 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2120431212 is about 46048.1401578826. The cubic root of 2120431212 is about 1284.7187506421.

Adding to 2120431212 its reverse (2121340212), we get a palindrome (4241771424).

The spelling of 2120431212 in words is "two billion, one hundred twenty million, four hundred thirty-one thousand, two hundred twelve".