20211201211001 has 8 divisors (see below), whose sum is σ = 20447890794240. Its totient is φ = 19975815703152.

The previous prime is 20211201210961. The next prime is 20211201211031. The reversal of 20211201211001 is 10011210211202.

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 20211201211001 - 2¹⁸ = 20211200948857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211201211031) 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, 325987670 + ... + 326049663.

It is an arithmetic number, because the mean of its divisors is an integer number (2555986349280).

Almost surely, 2^{20211201211001} is an apocalyptic number.

It is an amenable number.

20211201211001 is a deficient number, since it is larger than the sum of its proper divisors (236689583239).

20211201211001 is a wasteful number, since it uses less digits than its factorization.

20211201211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652037695.

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

Adding to 20211201211001 its reverse (10011210211202), we get a palindrome (30222411422203).

The spelling of 20211201211001 in words is "twenty trillion, two hundred eleven billion, two hundred one million, two hundred eleven thousand, one".