130633621 has 2 divisors, whose sum is σ = 130633622. Its totient is φ = 130633620.

The previous prime is 130633619. The next prime is 130633631. The reversal of 130633621 is 126336031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114190596 + 16443025 = 10686^2 + 4055^2 .

It is an emirp because it is prime and its reverse (126336031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130633621 - 2¹ = 130633619 is a prime.

Together with 130633619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130633631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65316810 + 65316811.

It is an arithmetic number, because the mean of its divisors is an integer number (65316811).

Almost surely, 2^130633621 is an apocalyptic number.

It is an amenable number.

130633621 is a deficient number, since it is larger than the sum of its proper divisors (1).

130633621 is an equidigital number, since it uses as much as digits as its factorization.

130633621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 130633621 is about 11429.5065947748. The cubic root of 130633621 is about 507.4013928312.

Adding to 130633621 its reverse (126336031), we get a palindrome (256969652).

The spelling of 130633621 in words is "one hundred thirty million, six hundred thirty-three thousand, six hundred twenty-one".