21332211542 has 8 divisors (see below), whose sum is σ = 32002072032. Its totient is φ = 10664854200.

The previous prime is 21332211503. The next prime is 21332211553. The reversal of 21332211542 is 24511223312.

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

It is a congruent number.

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, 604334 + ... + 638657.

It is an arithmetic number, because the mean of its divisors is an integer number (4000259004).

Almost surely, 2^21332211542 is an apocalyptic number.

21332211542 is a deficient number, since it is larger than the sum of its proper divisors (10669860490).

21332211542 is a wasteful number, since it uses less digits than its factorization.

21332211542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251574.

The product of its digits is 2880, while the sum is 26.

Adding to 21332211542 its reverse (24511223312), we get a palindrome (45843434854).

The spelling of 21332211542 in words is "twenty-one billion, three hundred thirty-two million, two hundred eleven thousand, five hundred forty-two".