201122001211 has 4 divisors (see below), whose sum is σ = 203877097192. Its totient is φ = 198366905232.

The previous prime is 201122001193. The next prime is 201122001229. The reversal of 201122001211 is 112100221102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (201122001193) and next prime (201122001229).

It is a cyclic number.

It is not a de Polignac number, because 201122001211 - 2¹³ = 201121993019 is a prime.

It is a super-2 number, since 2×201122001211² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201122001191 and 201122001200.

It is not an unprimeable number, because it can be changed into a prime (201122001611) 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, 1377547881 + ... + 1377548026.

It is an arithmetic number, because the mean of its divisors is an integer number (50969274298).

Almost surely, 2^201122001211 is an apocalyptic number.

201122001211 is a deficient number, since it is larger than the sum of its proper divisors (2755095981).

201122001211 is an equidigital number, since it uses as much as digits as its factorization.

201122001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755095980.

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

Adding to 201122001211 its reverse (112100221102), we get a palindrome (313222222313).

The spelling of 201122001211 in words is "two hundred one billion, one hundred twenty-two million, one thousand, two hundred eleven".