21144242133410 has 32 divisors (see below), whose sum is σ = 41519812781952. Its totient is φ = 7688776423680.

The previous prime is 21144242133397. The next prime is 21144242133431. The reversal of 21144242133410 is 1433124244112.

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, 30012554 + ... + 30708986.

It is an arithmetic number, because the mean of its divisors is an integer number (1297494149436).

Almost surely, 2^{21144242133410} is an apocalyptic number.

21144242133410 is a deficient number, since it is larger than the sum of its proper divisors (20375570648542).

21144242133410 is a wasteful number, since it uses less digits than its factorization.

21144242133410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972458.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 21144242133410 its reverse (1433124244112), we get a palindrome (22577366377522).

The spelling of 21144242133410 in words is "twenty-one trillion, one hundred forty-four billion, two hundred forty-two million, one hundred thirty-three thousand, four hundred ten".