21201231422342 has 8 divisors (see below), whose sum is σ = 32898462552000. Its totient is φ = 10235077238344.

The previous prime is 21201231422341. The next prime is 21201231422359. The reversal of 21201231422342 is 24322413210212.

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

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201231422341) 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, 182769236342 + ... + 182769236457.

It is an arithmetic number, because the mean of its divisors is an integer number (4112307819000).

Almost surely, 2^{21201231422342} is an apocalyptic number.

21201231422342 is a deficient number, since it is larger than the sum of its proper divisors (11697231129658).

21201231422342 is a wasteful number, since it uses less digits than its factorization.

21201231422342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365538472830.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 21201231422342 its reverse (24322413210212), we get a palindrome (45523644632554).

The spelling of 21201231422342 in words is "twenty-one trillion, two hundred one billion, two hundred thirty-one million, four hundred twenty-two thousand, three hundred forty-two".