20110021144 has 16 divisors (see below), whose sum is σ = 38345380200. Its totient is φ = 9884586432.

The previous prime is 20110021103. The next prime is 20110021201. The reversal of 20110021144 is 44112001102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21302517 + ... + 21303460.

Almost surely, 2^20110021144 is an apocalyptic number.

It is an amenable number.

20110021144 is a deficient number, since it is larger than the sum of its proper divisors (18235359056).

20110021144 is a wasteful number, since it uses less digits than its factorization.

20110021144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42606042 (or 42606038 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20110021144 its reverse (44112001102), we get a palindrome (64222022246).

The spelling of 20110021144 in words is "twenty billion, one hundred ten million, twenty-one thousand, one hundred forty-four".