21014431142200 has 48 divisors (see below), whose sum is σ = 48906784419480. Its totient is φ = 8397474476160.

The previous prime is 21014431142197. The next prime is 21014431142203. The reversal of 21014431142200 is 224113441012.

It is an interprime number because it is at equal distance from previous prime (21014431142197) and next prime (21014431142203).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014431142203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51659274 + ... + 52064473.

Almost surely, 2^{21014431142200} is an apocalyptic number.

21014431142200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21014431142200 is an abundant number, since it is smaller than the sum of its proper divisors (27892353277280).

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

21014431142200 is a wasteful number, since it uses less digits than its factorization.

21014431142200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103724776 (or 103724767 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21014431142200 its reverse (224113441012), we get a palindrome (21238544583212).

The spelling of 21014431142200 in words is "twenty-one trillion, fourteen billion, four hundred thirty-one million, one hundred forty-two thousand, two hundred".