200121021210122 has 32 divisors (see below), whose sum is σ = 319489872484752. Its totient is φ = 93685542027264.

The previous prime is 200121021210119. The next prime is 200121021210137. The reversal of 200121021210122 is 221012120121002.

It can be written as a sum of positive squares in 8 ways, for example, as 104975413554001 + 95145607656121 = 10245751^2 + 9754261^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 200121021210122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 898206728 + ... + 898429500.

Almost surely, 2^{200121021210122} is an apocalyptic number.

200121021210122 is a deficient number, since it is larger than the sum of its proper divisors (119368851274630).

200121021210122 is a wasteful number, since it uses less digits than its factorization.

200121021210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359882.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 200121021210122 its reverse (221012120121002), we get a palindrome (421133141331124).

The spelling of 200121021210122 in words is "two hundred trillion, one hundred twenty-one billion, twenty-one million, two hundred ten thousand, one hundred twenty-two".