111012001002021 has 16 divisors (see below), whose sum is σ = 169172700364800. Its totient is φ = 63431095651248.

The previous prime is 111012001001971. The next prime is 111012001002029. The reversal of 111012001002021 is 120200100210111.

It is not a de Polignac number, because 111012001002021 - 2¹⁷ = 111012000870949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111012001001988 and 111012001002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012001002029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180247461 + ... + 180862298.

It is an arithmetic number, because the mean of its divisors is an integer number (10573293772800).

Almost surely, 2^{111012001002021} is an apocalyptic number.

It is an amenable number.

111012001002021 is a deficient number, since it is larger than the sum of its proper divisors (58160699362779).

111012001002021 is a wasteful number, since it uses less digits than its factorization.

111012001002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361124408.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111012001002021 its reverse (120200100210111), we get a palindrome (231212101212132).

The spelling of 111012001002021 in words is "one hundred eleven trillion, twelve billion, one million, two thousand, twenty-one".