21514445223400 has 96 divisors (see below), whose sum is σ = 50118724339200. Its totient is φ = 8588992332800.

The previous prime is 21514445223367. The next prime is 21514445223433. The reversal of 21514445223400 is 432254441512.

It is an interprime number because it is at equal distance from previous prime (21514445223367) and next prime (21514445223433).

It is a self number, because there is not a number n which added to its sum of digits gives 21514445223400.

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, 288325296 + ... + 288399904.

It is an arithmetic number, because the mean of its divisors is an integer number (522070045200).

Almost surely, 2^{21514445223400} is an apocalyptic number.

21514445223400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21514445223400 is an abundant number, since it is smaller than the sum of its proper divisors (28604279115800).

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

21514445223400 is a wasteful number, since it uses less digits than its factorization.

21514445223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77419 (or 77410 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 21514445223400 its reverse (432254441512), we get a palindrome (21946699664912).

The spelling of 21514445223400 in words is "twenty-one trillion, five hundred fourteen billion, four hundred forty-five million, two hundred twenty-three thousand, four hundred".