210202021220122 has 8 divisors (see below), whose sum is σ = 315311775540372. Its totient is φ = 105098096040000.

The previous prime is 210202021220111. The next prime is 210202021220143. The reversal of 210202021220122 is 221022120202012.

It can be written as a sum of positive squares in 2 ways, for example, as 205370997454441 + 4831023765681 = 14330771^2 + 2197959^2 .

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 210202021220122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457194879 + ... + 1457339122.

Almost surely, 2^{210202021220122} is an apocalyptic number.

210202021220122 is a deficient number, since it is larger than the sum of its proper divisors (105109754320250).

210202021220122 is a wasteful number, since it uses less digits than its factorization.

210202021220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914570064.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 210202021220122 its reverse (221022120202012), we get a palindrome (431224141422134).

The spelling of 210202021220122 in words is "two hundred ten trillion, two hundred two billion, twenty-one million, two hundred twenty thousand, one hundred twenty-two".