21120021232233 has 32 divisors (see below), whose sum is σ = 35116593085440. Its totient is φ = 10968943863360.

The previous prime is 21120021232231. The next prime is 21120021232301. The reversal of 21120021232233 is 33223212002112.

It is not a de Polignac number, because 21120021232233 - 2¹ = 21120021232231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120021232231) 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, 9381003 + ... + 11412416.

It is an arithmetic number, because the mean of its divisors is an integer number (1097393533920).

Almost surely, 2^{21120021232233} is an apocalyptic number.

It is an amenable number.

21120021232233 is a deficient number, since it is larger than the sum of its proper divisors (13996571853207).

21120021232233 is a wasteful number, since it uses less digits than its factorization.

21120021232233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797837.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21120021232233 its reverse (33223212002112), we get a palindrome (54343233234345).

The spelling of 21120021232233 in words is "twenty-one trillion, one hundred twenty billion, twenty-one million, two hundred thirty-two thousand, two hundred thirty-three".