212012222402 has 8 divisors (see below), whose sum is σ = 318438439356. Its totient is φ = 105866075952.

The previous prime is 212012222327. The next prime is 212012222407. The reversal of 212012222402 is 204222210212.

It can be written as a sum of positive squares in 2 ways, for example, as 208254409801 + 3757812601 = 456349^2 + 61301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212012222402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212012222407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70015733 + ... + 70018760.

Almost surely, 2^212012222402 is an apocalyptic number.

212012222402 is a deficient number, since it is larger than the sum of its proper divisors (106426216954).

212012222402 is a wasteful number, since it uses less digits than its factorization.

212012222402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140035252.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212012222402 its reverse (204222210212), we get a palindrome (416234432614).

The spelling of 212012222402 in words is "two hundred twelve billion, twelve million, two hundred twenty-two thousand, four hundred two".