21120210211233 has 128 divisors (see below), whose sum is σ = 33465018875904. Its totient is φ = 11598718924800.

The previous prime is 21120210211189. The next prime is 21120210211267. The reversal of 21120210211233 is 33211201202112.

It is not a de Polignac number, because 21120210211233 - 2⁶ = 21120210211169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21120210011233) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20485169428 + ... + 20485170458.

It is an arithmetic number, because the mean of its divisors is an integer number (261445459968).

Almost surely, 2^{21120210211233} is an apocalyptic number.

It is an amenable number.

21120210211233 is a deficient number, since it is larger than the sum of its proper divisors (12344808664671).

21120210211233 is a wasteful number, since it uses less digits than its factorization.

21120210211233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21120210211233 its reverse (33211201202112), we get a palindrome (54331411413345).

The spelling of 21120210211233 in words is "twenty-one trillion, one hundred twenty billion, two hundred ten million, two hundred eleven thousand, two hundred thirty-three".