20211110122001 has 8 divisors (see below), whose sum is σ = 20310252888744. Its totient is φ = 20112073336960.

The previous prime is 20211110121977. The next prime is 20211110122067. The reversal of 20211110122001 is 10022101111202.

It can be written as a sum of positive squares in 4 ways, for example, as 717957960976 + 19493152161025 = 847324^2 + 4415105^2 .

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 20211110122001 - 2¹⁴ = 20211110105617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211110142001) 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, 26113070 + ... + 26875911.

It is an arithmetic number, because the mean of its divisors is an integer number (2538781611093).

Almost surely, 2^{20211110122001} is an apocalyptic number.

It is an amenable number.

20211110122001 is a deficient number, since it is larger than the sum of its proper divisors (99142766743).

20211110122001 is a wasteful number, since it uses less digits than its factorization.

20211110122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52990851.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20211110122001 its reverse (10022101111202), we get a palindrome (30233211233203).

The spelling of 20211110122001 in words is "twenty trillion, two hundred eleven billion, one hundred ten million, one hundred twenty-two thousand, one".