201212222211 has 48 divisors (see below), whose sum is σ = 390229781760. Its totient is φ = 96485376960.

The previous prime is 201212222209. The next prime is 201212222213. The reversal of 201212222211 is 112222212102.

It is a happy number.

201212222211 is a `hidden beast` number, since 20 + 1 + 212 + 222 + 211 = 666.

It is an interprime number because it is at equal distance from previous prime (201212222209) and next prime (201212222213).

It is not a de Polignac number, because 201212222211 - 2¹ = 201212222209 is a prime.

It is a super-3 number, since 3×201212222211³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (201212222213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11158281 + ... + 11176298.

It is an arithmetic number, because the mean of its divisors is an integer number (8129787120).

Almost surely, 2^201212222211 is an apocalyptic number.

201212222211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201212222211 is a deficient number, since it is larger than the sum of its proper divisors (189017559549).

201212222211 is a wasteful number, since it uses less digits than its factorization.

201212222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334616 (or 22334613 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201212222211 its reverse (112222212102), we get a palindrome (313434434313).

The spelling of 201212222211 in words is "two hundred one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred eleven".