21422341200 has 120 divisors (see below), whose sum is σ = 73901638048. Its totient is φ = 5273187840.

The previous prime is 21422341177. The next prime is 21422341219. The reversal of 21422341200 is 214322412.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 671014 + ... + 702213.

Almost surely, 2^21422341200 is an apocalyptic number.

21422341200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21422341200 is an abundant number, since it is smaller than the sum of its proper divisors (52479296848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422341200 is a wasteful number, since it uses less digits than its factorization.

21422341200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373261 (or 1373250 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21422341200 its reverse (214322412), we get a palindrome (21636663612).

The spelling of 21422341200 in words is "twenty-one billion, four hundred twenty-two million, three hundred forty-one thousand, two hundred".