1011212222 has 4 divisors (see below), whose sum is σ = 1516818336. Its totient is φ = 505606110.

The previous prime is 1011212177. The next prime is 1011212231. The reversal of 1011212222 is 2222121101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2222121101 = 8089 ⋅274709.

It is a junction number, because it is equal to n+sod(n) for n = 1011212197 and 1011212206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252803054 + ... + 252803057.

It is an arithmetic number, because the mean of its divisors is an integer number (379204584).

Almost surely, 2^1011212222 is an apocalyptic number.

1011212222 is a deficient number, since it is larger than the sum of its proper divisors (505606114).

1011212222 is an equidigital number, since it uses as much as digits as its factorization.

1011212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505606113.

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

The square root of 1011212222 is about 31799.5632359943. The cubic root of 1011212222 is about 1003.7235254829.

Adding to 1011212222 its reverse (2222121101), we get a palindrome (3233333323).

The spelling of 1011212222 in words is "one billion, eleven million, two hundred twelve thousand, two hundred twenty-two".