111020021000212 has 12 divisors (see below), whose sum is σ = 194897923303860. Its totient is φ = 55334900056256.

The previous prime is 111020021000191. The next prime is 111020021000219. The reversal of 111020021000212 is 212000120020111.

It can be written as a sum of positive squares in 2 ways, for example, as 48083628903696 + 62936392096516 = 6934236^2 + 7933246^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111020021000192 and 111020021000201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020021000219) 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, 43777609537 + ... + 43777612072.

It is an arithmetic number, because the mean of its divisors is an integer number (16241493608655).

Almost surely, 2^{111020021000212} is an apocalyptic number.

It is an amenable number.

111020021000212 is a deficient number, since it is larger than the sum of its proper divisors (83877902303648).

111020021000212 is a wasteful number, since it uses less digits than its factorization.

111020021000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87555221930 (or 87555221928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111020021000212 its reverse (212000120020111), we get a palindrome (323020141020323).

The spelling of 111020021000212 in words is "one hundred eleven trillion, twenty billion, twenty-one million, two hundred twelve", and thus it is an aban number.