1011222212 has 144 divisors (see below), whose sum is σ = 2448008640. Its totient is φ = 359251200.

The previous prime is 1011222211. The next prime is 1011222217. The reversal of 1011222212 is 2122221101.

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

It is not an unprimeable number, because it can be changed into a prime (1011222211) 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, 3054887 + ... + 3055217.

It is an arithmetic number, because the mean of its divisors is an integer number (17000060).

Almost surely, 2^1011222212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224004320).

1011222212 is an abundant number, since it is smaller than the sum of its proper divisors (1436786428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011222212 is a wasteful number, since it uses less digits than its factorization.

1011222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 473 counting only the distinct ones).

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

The square root of 1011222212 is about 31799.7203132355. The cubic root of 1011222212 is about 1003.7268308111.

Adding to 1011222212 its reverse (2122221101), we get a palindrome (3133443313).

The spelling of 1011222212 in words is "one billion, eleven million, two hundred twenty-two thousand, two hundred twelve".