21342311300 has 36 divisors (see below), whose sum is σ = 46414255860. Its totient is φ = 8518225920.

The previous prime is 21342311297. The next prime is 21342311321. The reversal of 21342311300 is 311324312.

It can be written as a sum of positive squares in 6 ways, for example, as 345142084 + 20997169216 = 18578^2 + 144904^2 .

It is a super-2 number, since 2×21342311300² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187805 + ... + 279204.

It is an arithmetic number, because the mean of its divisors is an integer number (1289284885).

Almost surely, 2^21342311300 is an apocalyptic number.

21342311300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21342311300 is an abundant number, since it is smaller than the sum of its proper divisors (25071944560).

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

21342311300 is a wasteful number, since it uses less digits than its factorization.

21342311300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467480 (or 467473 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21342311300 its reverse (311324312), we get a palindrome (21653635612).

The spelling of 21342311300 in words is "twenty-one billion, three hundred forty-two million, three hundred eleven thousand, three hundred".