21424014212100 has 72 divisors (see below), whose sum is σ = 62094244443168. Its totient is φ = 5703169075200.

The previous prime is 21424014212099. The next prime is 21424014212137. The reversal of 21424014212100 is 121241042412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61710246 + ... + 62056445.

Almost surely, 2^{21424014212100} is an apocalyptic number.

21424014212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21424014212100 is an abundant number, since it is smaller than the sum of its proper divisors (40670230231068).

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

21424014212100 is a wasteful number, since it uses less digits than its factorization.

21424014212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123767285 (or 123767278 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 21424014212100 its reverse (121241042412), we get a palindrome (21545255254512).

The spelling of 21424014212100 in words is "twenty-one trillion, four hundred twenty-four billion, fourteen million, two hundred twelve thousand, one hundred".