21020241444140 has 48 divisors (see below), whose sum is σ = 46466245701120. Its totient is φ = 7965488237760.

The previous prime is 21020241444101. The next prime is 21020241444187. The reversal of 21020241444140 is 4144414202012.

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 15 ways as a sum of consecutive naturals, for example, 53171405 + ... + 53565275.

It is an arithmetic number, because the mean of its divisors is an integer number (968046785440).

Almost surely, 2^{21020241444140} is an apocalyptic number.

21020241444140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020241444140 is an abundant number, since it is smaller than the sum of its proper divisors (25446004256980).

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

21020241444140 is a wasteful number, since it uses less digits than its factorization.

21020241444140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534342 (or 534340 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 21020241444140 its reverse (4144414202012), we get a palindrome (25164655646152).

The spelling of 21020241444140 in words is "twenty-one trillion, twenty billion, two hundred forty-one million, four hundred forty-four thousand, one hundred forty".