210202212122 has 128 divisors (see below), whose sum is σ = 391999979520. Its totient is φ = 82600277760.

The previous prime is 210202212107. The next prime is 210202212131. The reversal of 210202212122 is 221212202012.

It is a happy number.

It is a super-3 number, since 3×210202212122³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210202212122.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 192316208 + ... + 192317300.

It is an arithmetic number, because the mean of its divisors is an integer number (3062499840).

Almost surely, 2^210202212122 is an apocalyptic number.

210202212122 is a deficient number, since it is larger than the sum of its proper divisors (181797767398).

210202212122 is a wasteful number, since it uses less digits than its factorization.

210202212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 210202212122 its reverse (221212202012), we get a palindrome (431414414134).

The spelling of 210202212122 in words is "two hundred ten billion, two hundred two million, two hundred twelve thousand, one hundred twenty-two".