21342234444402 has 64 divisors (see below), whose sum is σ = 44936013394944. Its totient is φ = 6748667228160.

The previous prime is 21342234444397. The next prime is 21342234444407. The reversal of 21342234444402 is 20444443224312.

It is an interprime number because it is at equal distance from previous prime (21342234444397) and next prime (21342234444407).

It is a super-4 number, since 4×21342234444402⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (21342234444407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13514658 + ... + 15011010.

It is an arithmetic number, because the mean of its divisors is an integer number (702125209296).

Almost surely, 2^{21342234444402} is an apocalyptic number.

21342234444402 is an abundant number, since it is smaller than the sum of its proper divisors (23593778950542).

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

21342234444402 is a wasteful number, since it uses less digits than its factorization.

21342234444402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498003.

The product of its (nonzero) digits is 589824, while the sum is 39.

Adding to 21342234444402 its reverse (20444443224312), we get a palindrome (41786677668714).

The spelling of 21342234444402 in words is "twenty-one trillion, three hundred forty-two billion, two hundred thirty-four million, four hundred forty-four thousand, four hundred two".