2100146621 has 8 divisors (see below), whose sum is σ = 2173657080. Its totient is φ = 2026708992.

The previous prime is 2100146611. The next prime is 2100146647. The reversal of 2100146621 is 1266410012.

It can be written as a sum of positive squares in 4 ways, for example, as 147744025 + 1952402596 = 12155^2 + 44186^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100146621 - 2¹⁴ = 2100130237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100146611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44141 + ... + 78413.

It is an arithmetic number, because the mean of its divisors is an integer number (271707135).

Almost surely, 2^2100146621 is an apocalyptic number.

It is an amenable number.

2100146621 is a deficient number, since it is larger than the sum of its proper divisors (73510459).

2100146621 is a wasteful number, since it uses less digits than its factorization.

2100146621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36415.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 2100146621 is about 45827.3566878999. The cubic root of 2100146621 is about 1280.6089674364.

Adding to 2100146621 its reverse (1266410012), we get a palindrome (3366556633).

The spelling of 2100146621 in words is "two billion, one hundred million, one hundred forty-six thousand, six hundred twenty-one".