21342310100 has 36 divisors (see below), whose sum is σ = 46390260000. Its totient is φ = 8522648160.

The previous prime is 21342310097. The next prime is 21342310111. The reversal of 21342310100 is 101324312.

It is a congruent number.

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, 118250 + ... + 238049.

Almost surely, 2^21342310100 is an apocalyptic number.

21342310100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21342310100 is an abundant number, since it is smaller than the sum of its proper divisors (25047949900).

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

21342310100 is a wasteful number, since it uses less digits than its factorization.

21342310100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356912 (or 356905 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21342310100 its reverse (101324312), we get a palindrome (21443634412).

The spelling of 21342310100 in words is "twenty-one billion, three hundred forty-two million, three hundred ten thousand, one hundred".