210201221122 has 4 divisors (see below), whose sum is σ = 315301831686. Its totient is φ = 105100610560.

The previous prime is 210201221119. The next prime is 210201221147. The reversal of 210201221122 is 221122102012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 182721196681 + 27480024441 = 427459^2 + 165771^2 .

It is a super-2 number, since 2×210201221122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210201221096 and 210201221105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52550305279 + ... + 52550305282.

Almost surely, 2^210201221122 is an apocalyptic number.

210201221122 is a deficient number, since it is larger than the sum of its proper divisors (105100610564).

210201221122 is a wasteful number, since it uses less digits than its factorization.

210201221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105100610563.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210201221122 its reverse (221122102012), we get a palindrome (431323323134).

The spelling of 210201221122 in words is "two hundred ten billion, two hundred one million, two hundred twenty-one thousand, one hundred twenty-two".