111012221000 has 32 divisors (see below), whose sum is σ = 259768599480. Its totient is φ = 44404888000.

The previous prime is 111012220993. The next prime is 111012221011. The reversal of 111012221000 is 122210111.

It can be written as a sum of positive squares in 4 ways, for example, as 11712867076 + 99299353924 = 108226^2 + 315118^2 .

It is a super-2 number, since 2×111012221000² (a number of 23 digits) contains 22 as substring.

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, 55505111 + ... + 55507110.

Almost surely, 2^111012221000 is an apocalyptic number.

111012221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012221000 is an abundant number, since it is smaller than the sum of its proper divisors (148756378480).

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

111012221000 is a wasteful number, since it uses less digits than its factorization.

111012221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111012242 (or 111012228 counting only the distinct ones).

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

Adding to 111012221000 its reverse (122210111), we get a palindrome (111134431111).

The spelling of 111012221000 in words is "one hundred eleven billion, twelve million, two hundred twenty-one thousand".