21110011201 has 8 divisors (see below), whose sum is σ = 21267575784. Its totient is φ = 20952497280.

The previous prime is 21110011189. The next prime is 21110011207. The reversal of 21110011201 is 10211001112.

It can be written as a sum of positive squares in 4 ways, for example, as 16262370576 + 4847640625 = 127524^2 + 69625^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21110011201 - 2⁷ = 21110011073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110011207) 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, 1424691 + ... + 1439431.

It is an arithmetic number, because the mean of its divisors is an integer number (2658446973).

Almost surely, 2^21110011201 is an apocalyptic number.

It is an amenable number.

21110011201 is a deficient number, since it is larger than the sum of its proper divisors (157564583).

21110011201 is a wasteful number, since it uses less digits than its factorization.

21110011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25331.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21110011201 its reverse (10211001112), we get a palindrome (31321012313).

The spelling of 21110011201 in words is "twenty-one billion, one hundred ten million, eleven thousand, two hundred one".