20330021129 has 16 divisors (see below), whose sum is σ = 22320486144. Its totient is φ = 18363408000.

The previous prime is 20330021099. The next prime is 20330021137. The reversal of 20330021129 is 92112003302.

It is a cyclic number.

It is not a de Polignac number, because 20330021129 - 2¹⁶ = 20329955593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20330011129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4837229 + ... + 4841429.

It is an arithmetic number, because the mean of its divisors is an integer number (1395030384).

Almost surely, 2^20330021129 is an apocalyptic number.

It is an amenable number.

20330021129 is a deficient number, since it is larger than the sum of its proper divisors (1990465015).

20330021129 is a wasteful number, since it uses less digits than its factorization.

20330021129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6928.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 20330021129 in words is "twenty billion, three hundred thirty million, twenty-one thousand, one hundred twenty-nine".