1021111222 has 16 divisors (see below), whose sum is σ = 1645974000. Its totient is φ = 473349888.

The previous prime is 1021111219. The next prime is 1021111253. The reversal of 1021111222 is 2221111201.

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, 221847 + ... + 226402.

It is an arithmetic number, because the mean of its divisors is an integer number (102873375).

Almost surely, 2^1021111222 is an apocalyptic number.

1021111222 is a deficient number, since it is larger than the sum of its proper divisors (624862778).

1021111222 is a wasteful number, since it uses less digits than its factorization.

1021111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448335.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1021111222 is about 31954.8309649730. The cubic root of 1021111222 is about 1006.9881263378.

Adding to 1021111222 its reverse (2221111201), we get a palindrome (3242222423).

The spelling of 1021111222 in words is "one billion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".