20112211212201 has 8 divisors (see below), whose sum is σ = 29795868462560. Its totient is φ = 13408140808116.

The previous prime is 20112211212167. The next prime is 20112211212241. The reversal of 20112211212201 is 10221211221102.

20112211212201 is a `hidden beast` number, since 20 + 11 + 221 + 1 + 212 + 201 = 666.

It is not a de Polignac number, because 20112211212201 - 2¹⁷ = 20112211081129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112211212241) 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, 372448355755 + ... + 372448355808.

It is an arithmetic number, because the mean of its divisors is an integer number (3724483557820).

Almost surely, 2^{20112211212201} is an apocalyptic number.

It is an amenable number.

20112211212201 is a deficient number, since it is larger than the sum of its proper divisors (9683657250359).

20112211212201 is an equidigital number, since it uses as much as digits as its factorization.

20112211212201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744896711572 (or 744896711566 counting only the distinct ones).

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

Adding to 20112211212201 its reverse (10221211221102), we get a palindrome (30333422433303).

The spelling of 20112211212201 in words is "twenty trillion, one hundred twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred one".