1211012222 has 16 divisors (see below), whose sum is σ = 2077660032. Its totient is φ = 518595480.

The previous prime is 1211012213. The next prime is 1211012233. The reversal of 1211012222 is 2222101121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1211012197 and 1211012206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15428 + ... + 51575.

It is an arithmetic number, because the mean of its divisors is an integer number (129853752).

Almost surely, 2^1211012222 is an apocalyptic number.

1211012222 is a deficient number, since it is larger than the sum of its proper divisors (866647810).

1211012222 is a wasteful number, since it uses less digits than its factorization.

1211012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68303.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211012222 is about 34799.6008885159. The cubic root of 1211012222 is about 1065.8992961036.

Adding to 1211012222 its reverse (2222101121), we get a palindrome (3433113343).

The spelling of 1211012222 in words is "one billion, two hundred eleven million, twelve thousand, two hundred twenty-two".