21441513140220 has 192 divisors, whose sum is σ = 61842207006720. Its totient is φ = 5548849152000.

The previous prime is 21441513140183. The next prime is 21441513140237. The reversal of 21441513140220 is 2204131514412.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84421420 + ... + 84675020.

It is an arithmetic number, because the mean of its divisors is an integer number (322094828160).

Almost surely, 2^{21441513140220} is an apocalyptic number.

21441513140220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21441513140220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30921103503360).

21441513140220 is an abundant number, since it is smaller than the sum of its proper divisors (40400693866500).

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

21441513140220 is a wasteful number, since it uses less digits than its factorization.

21441513140220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253996 (or 253994 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21441513140220 its reverse (2204131514412), we get a palindrome (23645644654632).

The spelling of 21441513140220 in words is "twenty-one trillion, four hundred forty-one billion, five hundred thirteen million, one hundred forty thousand, two hundred twenty".