21441213000020 has 24 divisors (see below), whose sum is σ = 49119869782368. Its totient is φ = 7796804727200.

The previous prime is 21441212999981. The next prime is 21441213000037. The reversal of 21441213000020 is 2000031214412.

It is a super-2 number, since 2×21441213000020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 21441212999956 and 21441213000001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48730029326 + ... + 48730029765.

It is an arithmetic number, because the mean of its divisors is an integer number (2046661240932).

Almost surely, 2^{21441213000020} is an apocalyptic number.

21441213000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21441213000020 is an abundant number, since it is smaller than the sum of its proper divisors (27678656782348).

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

21441213000020 is a wasteful number, since it uses less digits than its factorization.

21441213000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97460059111 (or 97460059109 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21441213000020 its reverse (2000031214412), we get a palindrome (23441244214432).

The spelling of 21441213000020 in words is "twenty-one trillion, four hundred forty-one billion, two hundred thirteen million, twenty", and thus it is an aban number.