20211211122201 has 48 divisors (see below), whose sum is σ = 32147909314560. Its totient is φ = 12134152719360.

The previous prime is 20211211122197. The next prime is 20211211122301. The reversal of 20211211122201 is 10222111211202.

20211211122201 is a `hidden beast` number, since 20 + 211 + 211 + 1 + 2 + 220 + 1 = 666.

It is not a de Polignac number, because 20211211122201 - 2² = 20211211122197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211211122001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6979305 + ... + 9441033.

It is an arithmetic number, because the mean of its divisors is an integer number (669748110720).

Almost surely, 2^{20211211122201} is an apocalyptic number.

It is an amenable number.

20211211122201 is a deficient number, since it is larger than the sum of its proper divisors (11936698192359).

20211211122201 is a wasteful number, since it uses less digits than its factorization.

20211211122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462526 (or 2462523 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20211211122201 its reverse (10222111211202), we get a palindrome (30433322333403).

The spelling of 20211211122201 in words is "twenty trillion, two hundred eleven billion, two hundred eleven million, one hundred twenty-two thousand, two hundred one".