210021201021122 has 8 divisors (see below), whose sum is σ = 319347305662476. Its totient is φ = 103572099133632.

The previous prime is 210021201021119. The next prime is 210021201021127. The reversal of 210021201021122 is 221120102120012.

It can be written as a sum of positive squares in 2 ways, for example, as 201889116495361 + 8132084525761 = 14208769^2 + 2851681^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 210021201021122.

It is not an unprimeable number, because it can be changed into a prime (210021201021127) 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, 719250688283 + ... + 719250688574.

Almost surely, 2^{210021201021122} is an apocalyptic number.

210021201021122 is a deficient number, since it is larger than the sum of its proper divisors (109326104641354).

210021201021122 is a wasteful number, since it uses less digits than its factorization.

210021201021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438501376932.

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

Adding to 210021201021122 its reverse (221120102120012), we get a palindrome (431141303141134).

The spelling of 210021201021122 in words is "two hundred ten trillion, twenty-one billion, two hundred one million, twenty-one thousand, one hundred twenty-two".