111205214102420 has 24 divisors (see below), whose sum is σ = 233596937599200. Its totient is φ = 44469516501152.

The previous prime is 111205214102393. The next prime is 111205214102447. The reversal of 111205214102420 is 24201412502111.

It is an interprime number because it is at equal distance from previous prime (111205214102393) and next prime (111205214102447).

It is a self number, because there is not a number n which added to its sum of digits gives 111205214102420.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 785498690 + ... + 785640249.

It is an arithmetic number, because the mean of its divisors is an integer number (9733205733300).

Almost surely, 2^{111205214102420} is an apocalyptic number.

111205214102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111205214102420 is an abundant number, since it is smaller than the sum of its proper divisors (122391723496780).

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

111205214102420 is a wasteful number, since it uses less digits than its factorization.

111205214102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571142487 (or 1571142485 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

Adding to 111205214102420 its reverse (24201412502111), we get a palindrome (135406626604531).

The spelling of 111205214102420 in words is "one hundred eleven trillion, two hundred five billion, two hundred fourteen million, one hundred two thousand, four hundred twenty".