1020021212 has 24 divisors (see below), whose sum is σ = 2050623456. Its totient is φ = 434884608.

The previous prime is 1020021209. The next prime is 1020021229. The reversal of 1020021212 is 2121200201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1020021193 and 1020021202.

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, 88973 + ... + 99780.

It is an arithmetic number, because the mean of its divisors is an integer number (85442644).

Almost surely, 2^1020021212 is an apocalyptic number.

It is an amenable number.

1020021212 is an abundant number, since it is smaller than the sum of its proper divisors (1030602244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020021212 is a wasteful number, since it uses less digits than its factorization.

1020021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188957 (or 188955 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1020021212 is about 31937.7709303577. The cubic root of 1020021212 is about 1006.6296874467.

Adding to 1020021212 its reverse (2121200201), we get a palindrome (3141221413).

The spelling of 1020021212 in words is "one billion, twenty million, twenty-one thousand, two hundred twelve".