210121022220112 has 80 divisors (see below), whose sum is σ = 417940185741120. Its totient is φ = 102299584815104.

The previous prime is 210121022220107. The next prime is 210121022220133. The reversal of 210121022220112 is 211022220121012.

It is a super-3 number, since 3×210121022220112³ (a number of 44 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 210121022220112.

It is a congruent number.

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, 704583738 + ... + 704881894.

It is an arithmetic number, because the mean of its divisors is an integer number (5224252321764).

Almost surely, 2^{210121022220112} is an apocalyptic number.

It is an amenable number.

210121022220112 is a deficient number, since it is larger than the sum of its proper divisors (207819163521008).

210121022220112 is a wasteful number, since it uses less digits than its factorization.

210121022220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305308 (or 305302 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210121022220112 its reverse (211022220121012), we get a palindrome (421143242341124).

The spelling of 210121022220112 in words is "two hundred ten trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty thousand, one hundred twelve".