202221101212 has 24 divisors (see below), whose sum is σ = 381160434816. Its totient is φ = 93320219328.

The previous prime is 202221101191. The next prime is 202221101219. The reversal of 202221101212 is 212101122202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202221101219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132213 + ... + 649555.

It is an arithmetic number, because the mean of its divisors is an integer number (15881684784).

Almost surely, 2^202221101212 is an apocalyptic number.

It is an amenable number.

202221101212 is a deficient number, since it is larger than the sum of its proper divisors (178939333604).

202221101212 is a wasteful number, since it uses less digits than its factorization.

202221101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524877 (or 524875 counting only the distinct ones).

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

Adding to 202221101212 its reverse (212101122202), we get a palindrome (414322223414).

The spelling of 202221101212 in words is "two hundred two billion, two hundred twenty-one million, one hundred one thousand, two hundred twelve".