21233406002 has 8 divisors (see below), whose sum is σ = 31906086300. Its totient is φ = 10598043904.

The previous prime is 21233405987. The next prime is 21233406031. The reversal of 21233406002 is 20060433212.

It can be written as a sum of positive squares in 2 ways, for example, as 15388650601 + 5844755401 = 124051^2 + 76451^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9328127 + ... + 9330402.

Almost surely, 2^21233406002 is an apocalyptic number.

21233406002 is a deficient number, since it is larger than the sum of its proper divisors (10672680298).

21233406002 is a wasteful number, since it uses less digits than its factorization.

21233406002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18659100.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21233406002 its reverse (20060433212), we get a palindrome (41293839214).

The spelling of 21233406002 in words is "twenty-one billion, two hundred thirty-three million, four hundred six thousand, two".