2121644202 has 16 divisors (see below), whose sum is σ = 4333571712. Its totient is φ = 692167520.

The previous prime is 2121644197. The next prime is 2121644293. The reversal of 2121644202 is 2024461212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3761499 + ... + 3762062.

It is an arithmetic number, because the mean of its divisors is an integer number (270848232).

Almost surely, 2^2121644202 is an apocalyptic number.

2121644202 is an abundant number, since it is smaller than the sum of its proper divisors (2211927510).

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

2121644202 is a wasteful number, since it uses less digits than its factorization.

2121644202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7523613.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 2121644202 is about 46061.3091650682. The cubic root of 2121644202 is about 1284.9636778582.

The spelling of 2121644202 in words is "two billion, one hundred twenty-one million, six hundred forty-four thousand, two hundred two".