21114201400 has 24 divisors (see below), whose sum is σ = 49090518720. Its totient is φ = 8445680480.

The previous prime is 21114201397. The next prime is 21114201403. The reversal of 21114201400 is 410241112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21114201397) and next prime (21114201403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114201403) 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, 52785304 + ... + 52785703.

It is an arithmetic number, because the mean of its divisors is an integer number (2045438280).

Almost surely, 2^21114201400 is an apocalyptic number.

21114201400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21114201400 is an abundant number, since it is smaller than the sum of its proper divisors (27976317320).

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

21114201400 is a wasteful number, since it uses less digits than its factorization.

21114201400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105571023 (or 105571014 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21114201400 its reverse (410241112), we get a palindrome (21524442512).

The spelling of 21114201400 in words is "twenty-one billion, one hundred fourteen million, two hundred one thousand, four hundred".