21140221444103 has 8 divisors (see below), whose sum is σ = 21366206196480. Its totient is φ = 20914762851000.

The previous prime is 21140221444061. The next prime is 21140221444207. The reversal of 21140221444103 is 30144412204112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21140221444103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140221444703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131459033 + ... + 131619746.

It is an arithmetic number, because the mean of its divisors is an integer number (2670775774560).

Almost surely, 2^{21140221444103} is an apocalyptic number.

21140221444103 is a deficient number, since it is larger than the sum of its proper divisors (225984752377).

21140221444103 is a wasteful number, since it uses less digits than its factorization.

21140221444103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263079637.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 21140221444103 its reverse (30144412204112), we get a palindrome (51284633648215).

The spelling of 21140221444103 in words is "twenty-one trillion, one hundred forty billion, two hundred twenty-one million, four hundred forty-four thousand, one hundred three".