2121412312 has 8 divisors (see below), whose sum is σ = 3977648100. Its totient is φ = 1060706152.

The previous prime is 2121412289. The next prime is 2121412399. The reversal of 2121412312 is 2132141212.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2121412312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132588262 + ... + 132588277.

Almost surely, 2^2121412312 is an apocalyptic number.

It is an amenable number.

2121412312 is a deficient number, since it is larger than the sum of its proper divisors (1856235788).

2121412312 is a wasteful number, since it uses less digits than its factorization.

2121412312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265176545 (or 265176541 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 2121412312 is about 46058.7919077346. The cubic root of 2121412312 is about 1284.9168617955.

Adding to 2121412312 its reverse (2132141212), we get a palindrome (4253553524).

The spelling of 2121412312 in words is "two billion, one hundred twenty-one million, four hundred twelve thousand, three hundred twelve".