2121210412 has 6 divisors (see below), whose sum is σ = 3712118228. Its totient is φ = 1060605204.

The previous prime is 2121210367. The next prime is 2121210431. The reversal of 2121210412 is 2140121212.

It is a super-3 number, since 3×2121210412³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265151298 + ... + 265151305.

Almost surely, 2^2121210412 is an apocalyptic number.

It is an amenable number.

2121210412 is a deficient number, since it is larger than the sum of its proper divisors (1590907816).

2121210412 is a wasteful number, since it uses less digits than its factorization.

2121210412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530302607 (or 530302605 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2121210412 is about 46056.6000916264. The cubic root of 2121210412 is about 1284.8760976085.

Adding to 2121210412 its reverse (2140121212), we get a palindrome (4261331624).

The spelling of 2121210412 in words is "two billion, one hundred twenty-one million, two hundred ten thousand, four hundred twelve".