111111020122000 has 40 divisors (see below), whose sum is σ = 268666446659832. Its totient is φ = 44444408048000.

The previous prime is 111111020121973. The next prime is 111111020122001. The reversal of 111111020122000 is 221020111111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52892640256 + 111058127481744 = 229984^2 + 10538412^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (111111020122001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27777753031 + ... + 27777757030.

Almost surely, 2^{111111020122000} is an apocalyptic number.

111111020122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111111020122000 is an abundant number, since it is smaller than the sum of its proper divisors (157555426537832).

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

111111020122000 is an equidigital number, since it uses as much as digits as its factorization.

111111020122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55555510084 (or 55555510068 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111111020122000 its reverse (221020111111), we get a palindrome (111332040233111).

The spelling of 111111020122000 in words is "one hundred eleven trillion, one hundred eleven billion, twenty million, one hundred twenty-two thousand".