111121000010 has 8 divisors (see below), whose sum is σ = 200017800036. Its totient is φ = 44448400000.

The previous prime is 111120999991. The next prime is 111121000019. The reversal of 111121000010 is 10000121111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106924422049 + 4196577961 = 326993^2 + 64781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111121000019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556049991 + ... + 5556050010.

Almost surely, 2^111121000010 is an apocalyptic number.

111121000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111121000010 is a deficient number, since it is larger than the sum of its proper divisors (88896800026).

111121000010 is a wasteful number, since it uses less digits than its factorization.

111121000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112100008.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111121000010 its reverse (10000121111), we get a palindrome (121121121121).

It can be divided in two parts, 111 and 121000010, that added together give a palindrome (121000121).

The spelling of 111121000010 in words is "one hundred eleven billion, one hundred twenty-one million, ten", and thus it is an aban number.