21342021222399 has 32 divisors (see below), whose sum is σ = 29269007040000. Its totient is φ = 13827931438464.

The previous prime is 21342021222383. The next prime is 21342021222433. The reversal of 21342021222399 is 99322212024312.

It is not a de Polignac number, because 21342021222399 - 2⁴ = 21342021222383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21342021222399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342021222799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3600357 + ... + 7459665.

It is an arithmetic number, because the mean of its divisors is an integer number (914656470000).

Almost surely, 2^{21342021222399} is an apocalyptic number.

21342021222399 is a deficient number, since it is larger than the sum of its proper divisors (7926985817601).

21342021222399 is a wasteful number, since it uses less digits than its factorization.

21342021222399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859727.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 21342021222399 in words is "twenty-one trillion, three hundred forty-two billion, twenty-one million, two hundred twenty-two thousand, three hundred ninety-nine".