33230020129 has 2 divisors, whose sum is σ = 33230020130. Its totient is φ = 33230020128.

The previous prime is 33230020121. The next prime is 33230020171. The reversal of 33230020129 is 92102003233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33042877729 + 187142400 = 181777^2 + 13680^2 .

It is a cyclic number.

It is not a de Polignac number, because 33230020129 - 2³ = 33230020121 is a prime.

It is a super-2 number, since 2×33230020129² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33230020121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16615010064 + 16615010065.

It is an arithmetic number, because the mean of its divisors is an integer number (16615010065).

Almost surely, 2^33230020129 is an apocalyptic number.

It is an amenable number.

33230020129 is a deficient number, since it is larger than the sum of its proper divisors (1).

33230020129 is an equidigital number, since it uses as much as digits as its factorization.

33230020129 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 spelling of 33230020129 in words is "thirty-three billion, two hundred thirty million, twenty thousand, one hundred twenty-nine".