21470061100 has 18 divisors (see below), whose sum is σ = 46590032804. Its totient is φ = 8588024400.

The previous prime is 21470061097. The next prime is 21470061103. The reversal of 21470061100 is 116007412.

It is an interprime number because it is at equal distance from previous prime (21470061097) and next prime (21470061103).

It is not an unprimeable number, because it can be changed into a prime (21470061103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107350206 + ... + 107350405.

Almost surely, 2^21470061100 is an apocalyptic number.

21470061100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21470061100 is an abundant number, since it is smaller than the sum of its proper divisors (25119971704).

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

21470061100 is a wasteful number, since it uses less digits than its factorization.

21470061100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214700625 (or 214700618 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 21470061100 its reverse (116007412), we get a palindrome (21586068512).

The spelling of 21470061100 in words is "twenty-one billion, four hundred seventy million, sixty-one thousand, one hundred".