201022011 has 24 divisors (see below), whose sum is σ = 300478464. Its totient is φ = 129368880.

The previous prime is 201022007. The next prime is 201022013. The reversal of 201022011 is 110220102.

It is not a de Polignac number, because 201022011 - 2² = 201022007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 201021984 and 201022002.

It is not an unprimeable number, because it can be changed into a prime (201022013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168760 + ... + 169946.

It is an arithmetic number, because the mean of its divisors is an integer number (12519936).

Almost surely, 2^201022011 is an apocalyptic number.

201022011 is a deficient number, since it is larger than the sum of its proper divisors (99456453).

201022011 is a wasteful number, since it uses less digits than its factorization.

201022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 201022011 is about 14178.2231256247. The cubic root of 201022011 is about 585.7979817877.

Adding to 201022011 its reverse (110220102), we get a palindrome (311242113).

The spelling of 201022011 in words is "two hundred one million, twenty-two thousand, eleven".