21433044223400 has 24 divisors (see below), whose sum is σ = 49831827819870. Its totient is φ = 8573217689280.

The previous prime is 21433044223399. The next prime is 21433044223429. The reversal of 21433044223400 is 432244033412.

It can be written as a sum of positive squares in 3 ways, for example, as 9626412201316 + 11806632022084 = 3102646^2 + 3436078^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53582610359 + ... + 53582610758.

Almost surely, 2^{21433044223400} is an apocalyptic number.

21433044223400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21433044223400 is an abundant number, since it is smaller than the sum of its proper divisors (28398783596470).

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

21433044223400 is a wasteful number, since it uses less digits than its factorization.

21433044223400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107165221133 (or 107165221124 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 21433044223400 its reverse (432244033412), we get a palindrome (21865288256812).

The spelling of 21433044223400 in words is "twenty-one trillion, four hundred thirty-three billion, forty-four million, two hundred twenty-three thousand, four hundred".