111002021012 has 12 divisors (see below), whose sum is σ = 194373978036. Its totient is φ = 55466598720.

The previous prime is 111002020981. The next prime is 111002021029. The reversal of 111002021012 is 210120200111.

It can be written as a sum of positive squares in 2 ways, for example, as 45350257936 + 65651763076 = 212956^2 + 256226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111002020984 and 111002021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8595689 + ... + 8608592.

It is an arithmetic number, because the mean of its divisors is an integer number (16197831503).

Almost surely, 2^111002021012 is an apocalyptic number.

It is an amenable number.

111002021012 is a deficient number, since it is larger than the sum of its proper divisors (83371957024).

111002021012 is a wasteful number, since it uses less digits than its factorization.

111002021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17205898 (or 17205896 counting only the distinct ones).

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

Adding to 111002021012 its reverse (210120200111), we get a palindrome (321122221123).

The spelling of 111002021012 in words is "one hundred eleven billion, two million, twenty-one thousand, twelve".