1220102021212 has 24 divisors (see below), whose sum is σ = 2140973001216. Its totient is φ = 608395777728.

The previous prime is 1220102021191. The next prime is 1220102021221. The reversal of 1220102021212 is 2121202010221.

It is a happy number.

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, 17302458 + ... + 17372830.

It is an arithmetic number, because the mean of its divisors is an integer number (89207208384).

Almost surely, 2^{1220102021212} is an apocalyptic number.

It is an amenable number.

1220102021212 is a deficient number, since it is larger than the sum of its proper divisors (920870980004).

1220102021212 is a wasteful number, since it uses less digits than its factorization.

1220102021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82077 (or 82075 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1220102021212 its reverse (2121202010221), we get a palindrome (3341304031433).

The spelling of 1220102021212 in words is "one trillion, two hundred twenty billion, one hundred two million, twenty-one thousand, two hundred twelve".