111101021012 has 24 divisors (see below), whose sum is σ = 196130592000. Its totient is φ = 55065786336.

The previous prime is 111101020999. The next prime is 111101021029. The reversal of 111101021012 is 210120101111.

It is a junction number, because it is equal to n+sod(n) for n = 111101020984 and 111101021002.

It is a congruent number.

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, 45308 + ... + 473555.

It is an arithmetic number, because the mean of its divisors is an integer number (8172108000).

Almost surely, 2^111101021012 is an apocalyptic number.

It is an amenable number.

111101021012 is a deficient number, since it is larger than the sum of its proper divisors (85029570988).

111101021012 is a wasteful number, since it uses less digits than its factorization.

111101021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519335 (or 519333 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111101021012 its reverse (210120101111), we get a palindrome (321221122123).

The spelling of 111101021012 in words is "one hundred eleven billion, one hundred one million, twenty-one thousand, twelve".