21010141213220 has 48 divisors (see below), whose sum is σ = 44955457465968. Its totient is φ = 8245180569600.

The previous prime is 21010141213169. The next prime is 21010141213223. The reversal of 21010141213220 is 2231214101012.

It can be written as a sum of positive squares in 8 ways, for example, as 7201247388196 + 13808893825024 = 2683514^2 + 3716032^2 .

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 = 21010141213192 and 21010141213201.

It is not an unprimeable number, because it can be changed into a prime (21010141213223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29043920 + ... + 29758520.

It is an arithmetic number, because the mean of its divisors is an integer number (936572030541).

Almost surely, 2^{21010141213220} is an apocalyptic number.

21010141213220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010141213220 is an abundant number, since it is smaller than the sum of its proper divisors (23945316252748).

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

21010141213220 is a wasteful number, since it uses less digits than its factorization.

21010141213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742400 (or 742398 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21010141213220 its reverse (2231214101012), we get a palindrome (23241355314232).

The spelling of 21010141213220 in words is "twenty-one trillion, ten billion, one hundred forty-one million, two hundred thirteen thousand, two hundred twenty".