21020244144010 has 16 divisors (see below), whose sum is σ = 38716356656736. Its totient is φ = 8212560502608.

The previous prime is 21020244143939. The next prime is 21020244144013. The reversal of 21020244144010 is 1044144202012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21020244144013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24442143924 + ... + 24442144783.

It is an arithmetic number, because the mean of its divisors is an integer number (2419772291046).

Almost surely, 2^{21020244144010} is an apocalyptic number.

21020244144010 is a deficient number, since it is larger than the sum of its proper divisors (17696112512726).

21020244144010 is a wasteful number, since it uses less digits than its factorization.

21020244144010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48884288757.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 21020244144010 its reverse (1044144202012), we get a palindrome (22064388346022).

The spelling of 21020244144010 in words is "twenty-one trillion, twenty billion, two hundred forty-four million, one hundred forty-four thousand, ten".