21234032321051 has 8 divisors (see below), whose sum is σ = 23171658225408. Its totient is φ = 19297616305000.

The previous prime is 21234032321027. The next prime is 21234032321123. The reversal of 21234032321051 is 15012323043212.

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

It is a de Polignac number, because none of the positive numbers 2^k-21234032321051 is a prime.

It is a super-2 number, since 2×21234032321051² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21234032321851) 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, 302435375 + ... + 302505576.

It is an arithmetic number, because the mean of its divisors is an integer number (2896457278176).

Almost surely, 2^{21234032321051} is an apocalyptic number.

21234032321051 is a deficient number, since it is larger than the sum of its proper divisors (1937625904357).

21234032321051 is a wasteful number, since it uses less digits than its factorization.

21234032321051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604944153.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 21234032321051 its reverse (15012323043212), we get a palindrome (36246355364263).

The spelling of 21234032321051 in words is "twenty-one trillion, two hundred thirty-four billion, thirty-two million, three hundred twenty-one thousand, fifty-one".