21034444101 has 24 divisors (see below), whose sum is σ = 30987169920. Its totient is φ = 12682053120.

The previous prime is 21034444073. The next prime is 21034444103. The reversal of 21034444101 is 10144443012.

It is not a de Polignac number, because 21034444101 - 2²¹ = 21032346949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21034444103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80061 + ... + 220178.

It is an arithmetic number, because the mean of its divisors is an integer number (1291132080).

Almost surely, 2^21034444101 is an apocalyptic number.

It is an amenable number.

21034444101 is a deficient number, since it is larger than the sum of its proper divisors (9952725819).

21034444101 is a wasteful number, since it uses less digits than its factorization.

21034444101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300457 (or 300446 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21034444101 its reverse (10144443012), we get a palindrome (31178887113).

The spelling of 21034444101 in words is "twenty-one billion, thirty-four million, four hundred forty-four thousand, one hundred one".