4121650621 has 4 divisors (see below), whose sum is σ = 4496346144. Its totient is φ = 3746955100.

The previous prime is 4121650619. The next prime is 4121650627. The reversal of 4121650621 is 1260561214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4121650621 - 2¹ = 4121650619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4121650621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121650627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187347745 + ... + 187347766.

It is an arithmetic number, because the mean of its divisors is an integer number (1124086536).

Almost surely, 2^4121650621 is an apocalyptic number.

It is an amenable number.

4121650621 is a deficient number, since it is larger than the sum of its proper divisors (374695523).

4121650621 is a wasteful number, since it uses less digits than its factorization.

4121650621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374695522.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 4121650621 is about 64200.0827180152. The cubic root of 4121650621 is about 1603.3329768293.

The spelling of 4121650621 in words is "four billion, one hundred twenty-one million, six hundred fifty thousand, six hundred twenty-one".