2321016621 has 32 divisors (see below), whose sum is σ = 3883923456. Its totient is φ = 1197720000.

The previous prime is 2321016617. The next prime is 2321016629. The reversal of 2321016621 is 1266101232.

It is not a de Polignac number, because 2321016621 - 2² = 2321016617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2321016591 and 2321016600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321016629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1611 + ... + 68151.

It is an arithmetic number, because the mean of its divisors is an integer number (121372608).

Almost surely, 2^2321016621 is an apocalyptic number.

2321016621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2321016621 is a deficient number, since it is larger than the sum of its proper divisors (1562906835).

2321016621 is a wasteful number, since it uses less digits than its factorization.

2321016621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66713.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2321016621 is about 48176.9303816671. The cubic root of 2321016621 is about 1324.0145269458.

Adding to 2321016621 its reverse (1266101232), we get a palindrome (3587117853).

The spelling of 2321016621 in words is "two billion, three hundred twenty-one million, sixteen thousand, six hundred twenty-one".