210221120112102 has 48 divisors (see below), whose sum is σ = 496899171671760. Its totient is φ = 63701717452800.

The previous prime is 210221120112097. The next prime is 210221120112233. The reversal of 210221120112102 is 201211021122012.

210221120112102 is a `hidden beast` number, since 210 + 2 + 211 + 20 + 11 + 210 + 2 = 666.

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

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, 6105099 + ... + 21394262.

It is an arithmetic number, because the mean of its divisors is an integer number (10352066076495).

Almost surely, 2^{210221120112102} is an apocalyptic number.

210221120112102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210221120112102 is an abundant number, since it is smaller than the sum of its proper divisors (286678051559658).

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

210221120112102 is a wasteful number, since it uses less digits than its factorization.

210221120112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27537989 (or 27537986 counting only the distinct ones).

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

Adding to 210221120112102 its reverse (201211021122012), we get a palindrome (411432141234114).

The spelling of 210221120112102 in words is "two hundred ten trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twelve thousand, one hundred two".