201011211 has 6 divisors (see below), whose sum is σ = 290349540. Its totient is φ = 134007468.

The previous prime is 201011207. The next prime is 201011219. The reversal of 201011211 is 112110102.

It is a happy number.

It is not a de Polignac number, because 201011211 - 2² = 201011207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22334579 = 201011211 / (2 + 0 + 1 + 0 + 1 + 1 + 2 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 201011193 and 201011202.

It is not an unprimeable number, because it can be changed into a prime (201011219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11167281 + ... + 11167298.

It is an arithmetic number, because the mean of its divisors is an integer number (48391590).

Almost surely, 2^201011211 is an apocalyptic number.

201011211 is a deficient number, since it is larger than the sum of its proper divisors (89338329).

201011211 is a wasteful number, since it uses less digits than its factorization.

201011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334585 (or 22334582 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 201011211 is about 14177.8422547297. The cubic root of 201011211 is about 585.7874908445.

Adding to 201011211 its reverse (112110102), we get a palindrome (313121313).

It can be divided in two parts, 20101 and 1211, that added together give a palindrome (21312).

The spelling of 201011211 in words is "two hundred one million, eleven thousand, two hundred eleven".