21010301144 has 48 divisors (see below), whose sum is σ = 45844039800. Its totient is φ = 9000878208.

The previous prime is 21010301107. The next prime is 21010301153. The reversal of 21010301144 is 44110301012.

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 11 ways as a sum of consecutive naturals, for example, 1152452 + ... + 1170540.

Almost surely, 2^21010301144 is an apocalyptic number.

It is an amenable number.

21010301144 is an abundant number, since it is smaller than the sum of its proper divisors (24833738656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21010301144 is a wasteful number, since it uses less digits than its factorization.

21010301144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21072 (or 21061 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21010301144 its reverse (44110301012), we get a palindrome (65120602156).

The spelling of 21010301144 in words is "twenty-one billion, ten million, three hundred one thousand, one hundred forty-four".