1222011 has 36 divisors (see below), whose sum is σ = 2187432. Its totient is φ = 653184.

The previous prime is 1222003. The next prime is 1222019. The reversal of 1222011 is 1102221.

It is an interprime number because it is at equal distance from previous prime (1222003) and next prime (1222019).

It is not a de Polignac number, because 1222011 - 2³ = 1222003 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 = 1221984 and 1222002.

It is not an unprimeable number, because it can be changed into a prime (1222019) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7416 + ... + 7578.

It is an arithmetic number, because the mean of its divisors is an integer number (60762).

2^1222011 is an apocalyptic number.

1222011 is a deficient number, since it is larger than the sum of its proper divisors (965421).

1222011 is a wasteful number, since it uses less digits than its factorization.

1222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 190 counting only the distinct ones).

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

The square root of 1222011 is about 1105.4460638132. The cubic root of 1222011 is about 106.9116515311.

Adding to 1222011 its reverse (1102221), we get a palindrome (2324232).

The spelling of 1222011 in words is "one million, two hundred twenty-two thousand, eleven".