21144341314020 has 24 divisors (see below), whose sum is σ = 59204155679424. Its totient is φ = 5638491017056.

The previous prime is 21144341314003. The next prime is 21144341314037. The reversal of 21144341314020 is 2041314344112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21144341314003) and next prime (21144341314037).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176202844224 + ... + 176202844343.

It is an arithmetic number, because the mean of its divisors is an integer number (2466839819976).

Almost surely, 2^{21144341314020} is an apocalyptic number.

21144341314020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21144341314020 is an abundant number, since it is smaller than the sum of its proper divisors (38059814365404).

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

21144341314020 is a wasteful number, since it uses less digits than its factorization.

21144341314020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352405688579 (or 352405688577 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 21144341314020 its reverse (2041314344112), we get a palindrome (23185655658132).

The spelling of 21144341314020 in words is "twenty-one trillion, one hundred forty-four billion, three hundred forty-one million, three hundred fourteen thousand, twenty".