21048810201 has 16 divisors (see below), whose sum is σ = 31428966400. Its totient is φ = 13922045424.

The previous prime is 21048810191. The next prime is 21048810221. The reversal of 21048810201 is 10201884012.

It is not a de Polignac number, because 21048810201 - 2¹³ = 21048802009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21048810221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3065806 + ... + 3072663.

It is an arithmetic number, because the mean of its divisors is an integer number (1964310400).

Almost surely, 2^21048810201 is an apocalyptic number.

It is an amenable number.

21048810201 is a deficient number, since it is larger than the sum of its proper divisors (10380156199).

21048810201 is a wasteful number, since it uses less digits than its factorization.

21048810201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138605 (or 6138599 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The spelling of 21048810201 in words is "twenty-one billion, forty-eight million, eight hundred ten thousand, two hundred one".