210100212111222 has 48 divisors (see below), whose sum is σ = 469274214361680. Its totient is φ = 67903295832576.

The previous prime is 210100212111161. The next prime is 210100212111271. The reversal of 210100212111222 is 222111212001012.

210100212111222 is a `hidden beast` number, since 21 + 0 + 100 + 212 + 111 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 210100212111195 and 210100212111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354953123 + ... + 1355108174.

It is an arithmetic number, because the mean of its divisors is an integer number (9776546132535).

Almost surely, 2^{210100212111222} is an apocalyptic number.

210100212111222 is an abundant number, since it is smaller than the sum of its proper divisors (259174002250458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210100212111222 is a wasteful number, since it uses less digits than its factorization.

210100212111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710061437 (or 2710061434 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 210100212111222 its reverse (222111212001012), we get a palindrome (432211424112234).

The spelling of 210100212111222 in words is "two hundred ten trillion, one hundred billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty-two".