1020221212 has 24 divisors (see below), whose sum is σ = 1870848000. Its totient is φ = 485879856.

The previous prime is 1020221179. The next prime is 1020221231. The reversal of 1020221212 is 2121220201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020221192 and 1020221201.

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, 1212 + ... + 45187.

It is an arithmetic number, because the mean of its divisors is an integer number (77952000).

Almost surely, 2^1020221212 is an apocalyptic number.

It is an amenable number.

1020221212 is a deficient number, since it is larger than the sum of its proper divisors (850626788).

1020221212 is a wasteful number, since it uses less digits than its factorization.

1020221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46665 (or 46663 counting only the distinct ones).

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

The square root of 1020221212 is about 31940.9018657896. The cubic root of 1020221212 is about 1006.6954745690.

Adding to 1020221212 its reverse (2121220201), we get a palindrome (3141441413).

The spelling of 1020221212 in words is "one billion, twenty million, two hundred twenty-one thousand, two hundred twelve".