111012220100 has 18 divisors (see below), whose sum is σ = 240896517834. Its totient is φ = 44404888000.

The previous prime is 111012220097. The next prime is 111012220133. The reversal of 111012220100 is 1022210111.

It can be written as a sum of positive squares in 3 ways, for example, as 3685218436 + 107327001664 = 60706^2 + 327608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555061001 + ... + 555061200.

Almost surely, 2^111012220100 is an apocalyptic number.

111012220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012220100 is an abundant number, since it is smaller than the sum of its proper divisors (129884297734).

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

111012220100 is a wasteful number, since it uses less digits than its factorization.

111012220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110122215 (or 1110122208 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111012220100 its reverse (1022210111), we get a palindrome (112034430211).

The spelling of 111012220100 in words is "one hundred eleven billion, twelve million, two hundred twenty thousand, one hundred".