20211121210201 has 16 divisors (see below), whose sum is σ = 21470413922496. Its totient is φ = 18959655108096.

The previous prime is 20211121210187. The next prime is 20211121210261. The reversal of 20211121210201 is 10201212111202.

It is not a de Polignac number, because 20211121210201 - 2⁵ = 20211121210169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211121210261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283601365 + ... + 283672621.

It is an arithmetic number, because the mean of its divisors is an integer number (1341900870156).

Almost surely, 2^{20211121210201} is an apocalyptic number.

It is an amenable number.

20211121210201 is a deficient number, since it is larger than the sum of its proper divisors (1259292712295).

20211121210201 is a wasteful number, since it uses less digits than its factorization.

20211121210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125928.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20211121210201 its reverse (10201212111202), we get a palindrome (30412333321403).

The spelling of 20211121210201 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, two hundred one".