21110333021201 has 8 divisors (see below), whose sum is σ = 21129340929480. Its totient is φ = 21091325663232.

The previous prime is 21110333021161. The next prime is 21110333021221. The reversal of 21110333021201 is 10212033301112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 177008684176 + 20933324337025 = 420724^2 + 4575295^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21110333021201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110333021221) 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, 144882881 + ... + 145028513.

It is an arithmetic number, because the mean of its divisors is an integer number (2641167616185).

Almost surely, 2^{21110333021201} is an apocalyptic number.

It is an amenable number.

21110333021201 is a deficient number, since it is larger than the sum of its proper divisors (19007908279).

21110333021201 is a wasteful number, since it uses less digits than its factorization.

21110333021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275155.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21110333021201 its reverse (10212033301112), we get a palindrome (31322366322313).

The spelling of 21110333021201 in words is "twenty-one trillion, one hundred ten billion, three hundred thirty-three million, twenty-one thousand, two hundred one".