1001122222 has 8 divisors (see below), whose sum is σ = 1509980472. Its totient is φ = 497795400.

The previous prime is 1001122189. The next prime is 1001122229. The reversal of 1001122222 is 2222211001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001122229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1382404 + ... + 1383127.

It is an arithmetic number, because the mean of its divisors is an integer number (188747559).

Almost surely, 2^1001122222 is an apocalyptic number.

1001122222 is a deficient number, since it is larger than the sum of its proper divisors (508858250).

1001122222 is a wasteful number, since it uses less digits than its factorization.

1001122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2765714.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1001122222 is about 31640.5155141316. The cubic root of 1001122222 is about 1000.3739341558.

Adding to 1001122222 its reverse (2222211001), we get a palindrome (3223333223).

The spelling of 1001122222 in words is "one billion, one million, one hundred twenty-two thousand, two hundred twenty-two".