21322004100342 has 32 divisors (see below), whose sum is σ = 48021405133824. Its totient is φ = 6252787125600.

The previous prime is 21322004100289. The next prime is 21322004100343. The reversal of 21322004100342 is 24300140022312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322004100343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5210653893 + ... + 5210657984.

It is an arithmetic number, because the mean of its divisors is an integer number (1500668910432).

Almost surely, 2^{21322004100342} is an apocalyptic number.

21322004100342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21322004100342 is an abundant number, since it is smaller than the sum of its proper divisors (26699401033482).

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

21322004100342 is a wasteful number, since it uses less digits than its factorization.

21322004100342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421311924.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21322004100342 its reverse (24300140022312), we get a palindrome (45622144122654).

The spelling of 21322004100342 in words is "twenty-one trillion, three hundred twenty-two billion, four million, one hundred thousand, three hundred forty-two".