11212120201 has 4 divisors (see below), whose sum is σ = 11699603712. Its totient is φ = 10724636692.

The previous prime is 11212120193. The next prime is 11212120219. The reversal of 11212120201 is 10202121211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11212120201 - 2³ = 11212120193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212120291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243741721 + ... + 243741766.

It is an arithmetic number, because the mean of its divisors is an integer number (2924900928).

Almost surely, 2^11212120201 is an apocalyptic number.

It is an amenable number.

11212120201 is a deficient number, since it is larger than the sum of its proper divisors (487483511).

11212120201 is an equidigital number, since it uses as much as digits as its factorization.

11212120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487483510.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11212120201 its reverse (10202121211), we get a palindrome (21414241412).

The spelling of 11212120201 in words is "eleven billion, two hundred twelve million, one hundred twenty thousand, two hundred one".