21020244143410 has 32 divisors (see below), whose sum is σ = 38440187976960. Its totient is φ = 8274624688512.

The previous prime is 21020244143323. The next prime is 21020244143441. The reversal of 21020244143410 is 1434144202012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43092819 + ... + 43577878.

It is an arithmetic number, because the mean of its divisors is an integer number (1201255874280).

Almost surely, 2^{21020244143410} is an apocalyptic number.

21020244143410 is a deficient number, since it is larger than the sum of its proper divisors (17419943833550).

21020244143410 is a wasteful number, since it uses less digits than its factorization.

21020244143410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86671090.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21020244143410 its reverse (1434144202012), we get a palindrome (22454388345422).

The spelling of 21020244143410 in words is "twenty-one trillion, twenty billion, two hundred forty-four million, one hundred forty-three thousand, four hundred ten".