20111112120210 has 32 divisors (see below), whose sum is σ = 48266959708800. Its totient is φ = 5362930940928.

The previous prime is 20111112120199. The next prime is 20111112120221. The reversal of 20111112120210 is 1202121111102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20111112120199) and next prime (20111112120221).

It is a super-2 number, since 2×20111112120210² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20111112120210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3274866 + ... + 7137714.

It is an arithmetic number, because the mean of its divisors is an integer number (1508342490900).

Almost surely, 2^{20111112120210} is an apocalyptic number.

20111112120210 is an abundant number, since it is smaller than the sum of its proper divisors (28155847588590).

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

20111112120210 is a wasteful number, since it uses less digits than its factorization.

20111112120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036402.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20111112120210 its reverse (1202121111102), we get a palindrome (21313233231312).

The spelling of 20111112120210 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty thousand, two hundred ten".