1022021212 has 12 divisors (see below), whose sum is σ = 1788897880. Its totient is φ = 510907536.

The previous prime is 1022021171. The next prime is 1022021239. The reversal of 1022021212 is 2121202201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1022021192 and 1022021201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 762 + ... + 45217.

Almost surely, 2^1022021212 is an apocalyptic number.

It is an amenable number.

1022021212 is a deficient number, since it is larger than the sum of its proper divisors (766876668).

1022021212 is a wasteful number, since it uses less digits than its factorization.

1022021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51540 (or 51538 counting only the distinct ones).

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

The square root of 1022021212 is about 31969.0664862145. The cubic root of 1022021212 is about 1007.2871721324.

Adding to 1022021212 its reverse (2121202201), we get a palindrome (3143223413).

The spelling of 1022021212 in words is "one billion, twenty-two million, twenty-one thousand, two hundred twelve".