102111201222210 has 24 divisors (see below), whose sum is σ = 265489123177980. Its totient is φ = 27229653659232.

The previous prime is 102111201222167. The next prime is 102111201222229. The reversal of 102111201222210 is 12222102111201.

102111201222210 is a `hidden beast` number, since 1 + 0 + 21 + 11 + 201 + 222 + 210 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 88757709319161 + 13353491903049 = 9421131^2 + 3654243^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567284451145 + ... + 567284451324.

Almost surely, 2^{102111201222210} is an apocalyptic number.

102111201222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102111201222210 is an abundant number, since it is smaller than the sum of its proper divisors (163377921955770).

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

102111201222210 is a wasteful number, since it uses less digits than its factorization.

102111201222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134568902482 (or 1134568902479 counting only the distinct ones).

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

Adding to 102111201222210 its reverse (12222102111201), we get a palindrome (114333303333411).

The spelling of 102111201222210 in words is "one hundred two trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, two hundred ten".