21030120033 has 32 divisors (see below), whose sum is σ = 30386033664. Its totient is φ = 12860854272.

The previous prime is 21030120031. The next prime is 21030120091. The reversal of 21030120033 is 33002103012.

It is not a de Polignac number, because 21030120033 - 2¹ = 21030120031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21030119994 and 21030120021.

It is not an unprimeable number, because it can be changed into a prime (21030120031) 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, 5851285 + ... + 5854877.

It is an arithmetic number, because the mean of its divisors is an integer number (949563552).

Almost surely, 2^21030120033 is an apocalyptic number.

It is an amenable number.

21030120033 is a deficient number, since it is larger than the sum of its proper divisors (9355913631).

21030120033 is a wasteful number, since it uses less digits than its factorization.

21030120033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21030120033 its reverse (33002103012), we get a palindrome (54032223045).

The spelling of 21030120033 in words is "twenty-one billion, thirty million, one hundred twenty thousand, thirty-three".