111220203030 has 16 divisors (see below), whose sum is σ = 266928487344. Its totient is φ = 29658720800.

The previous prime is 111220203013. The next prime is 111220203049. The reversal of 111220203030 is 30302022111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853670021 + ... + 1853670080.

It is an arithmetic number, because the mean of its divisors is an integer number (16683030459).

Almost surely, 2^111220203030 is an apocalyptic number.

111220203030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111220203030 is an abundant number, since it is smaller than the sum of its proper divisors (155708284314).

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

111220203030 is a wasteful number, since it uses less digits than its factorization.

111220203030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3707340111.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 111220203030 its reverse (30302022111), we get a palindrome (141522225141).

The spelling of 111220203030 in words is "one hundred eleven billion, two hundred twenty million, two hundred three thousand, thirty".