21110122222001 has 8 divisors (see below), whose sum is σ = 21192568065504. Its totient is φ = 21027678745600.

The previous prime is 21110122221989. The next prime is 21110122222031. The reversal of 21110122222001 is 10022222101112.

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 21110122222001 - 2¹⁴ = 21110122205617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110122222031) 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, 18476486 + ... + 19585728.

It is an arithmetic number, because the mean of its divisors is an integer number (2649071008188).

Almost surely, 2^{21110122222001} is an apocalyptic number.

It is an amenable number.

21110122222001 is a deficient number, since it is larger than the sum of its proper divisors (82445843503).

21110122222001 is a wasteful number, since it uses less digits than its factorization.

21110122222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183551.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21110122222001 its reverse (10022222101112), we get a palindrome (31132344323113).

The spelling of 21110122222001 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-two million, two hundred twenty-two thousand, one".