111209214100 has 18 divisors (see below), whose sum is σ = 241323994814. Its totient is φ = 44483685600.

The previous prime is 111209214097. The next prime is 111209214101. The reversal of 111209214100 is 1412902111.

It can be written as a sum of positive squares in 3 ways, for example, as 28855137424 + 82354076676 = 169868^2 + 286974^2 .

It is a super-3 number, since 3×111209214100³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111209214101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556045971 + ... + 556046170.

Almost surely, 2^111209214100 is an apocalyptic number.

111209214100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111209214100 is an abundant number, since it is smaller than the sum of its proper divisors (130114780714).

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

111209214100 is a wasteful number, since it uses less digits than its factorization.

111209214100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112092155 (or 1112092148 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 111209214100 in words is "one hundred eleven billion, two hundred nine million, two hundred fourteen thousand, one hundred".