21123202212233 has 8 divisors (see below), whose sum is σ = 23074930566336. Its totient is φ = 19176713398800.

The previous prime is 21123202212181. The next prime is 21123202212271. The reversal of 21123202212233 is 33221220232112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21123202212233 - 2⁸ = 21123202211977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21123202212533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309876733 + ... + 1309892858.

It is an arithmetic number, because the mean of its divisors is an integer number (2884366320792).

Almost surely, 2^{21123202212233} is an apocalyptic number.

It is an amenable number.

21123202212233 is a deficient number, since it is larger than the sum of its proper divisors (1951728354103).

21123202212233 is a wasteful number, since it uses less digits than its factorization.

21123202212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619770335.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21123202212233 its reverse (33221220232112), we get a palindrome (54344422444345).

The spelling of 21123202212233 in words is "twenty-one trillion, one hundred twenty-three billion, two hundred two million, two hundred twelve thousand, two hundred thirty-three".