21233123102 has 8 divisors (see below), whose sum is σ = 31951441776. Its totient is φ = 10582642512.

The previous prime is 21233123101. The next prime is 21233123129. The reversal of 21233123102 is 20132133212.

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

It is a super-2 number, since 2×21233123102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233123101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16958738 + ... + 16959989.

It is an arithmetic number, because the mean of its divisors is an integer number (3993930222).

Almost surely, 2^21233123102 is an apocalyptic number.

21233123102 is a deficient number, since it is larger than the sum of its proper divisors (10718318674).

21233123102 is a wasteful number, since it uses less digits than its factorization.

21233123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33919042.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21233123102 its reverse (20132133212), we get a palindrome (41365256314).

The spelling of 21233123102 in words is "twenty-one billion, two hundred thirty-three million, one hundred twenty-three thousand, one hundred two".