2033129621 has 2 divisors, whose sum is σ = 2033129622. Its totient is φ = 2033129620.

The previous prime is 2033129537. The next prime is 2033129629. The reversal of 2033129621 is 1269213302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1724740900 + 308388721 = 41530^2 + 17561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2033129621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2033129629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1016564810 + 1016564811.

It is an arithmetic number, because the mean of its divisors is an integer number (1016564811).

Almost surely, 2^2033129621 is an apocalyptic number.

It is an amenable number.

2033129621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2033129621 is an equidigital number, since it uses as much as digits as its factorization.

2033129621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2033129621 is about 45090.2386443008. The cubic root of 2033129621 is about 1266.8397714099.

The spelling of 2033129621 in words is "two billion, thirty-three million, one hundred twenty-nine thousand, six hundred twenty-one".