2162021504212 has 6 divisors (see below), whose sum is σ = 3783537632378. Its totient is φ = 1081010752104.

The previous prime is 2162021504173. The next prime is 2162021504213. The reversal of 2162021504212 is 2124051202612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2135672423236 + 26349080976 = 1461394^2 + 162324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162021504213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270252688023 + ... + 270252688030.

Almost surely, 2^{2162021504212} is an apocalyptic number.

It is an amenable number.

2162021504212 is a deficient number, since it is larger than the sum of its proper divisors (1621516128166).

2162021504212 is a wasteful number, since it uses less digits than its factorization.

2162021504212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540505376057 (or 540505376055 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 2162021504212 its reverse (2124051202612), we get a palindrome (4286072706824).

The spelling of 2162021504212 in words is "two trillion, one hundred sixty-two billion, twenty-one million, five hundred four thousand, two hundred twelve".