1021112012011 has 16 divisors (see below), whose sum is σ = 1285980070144. Its totient is φ = 789124127904.

The previous prime is 1021112012009. The next prime is 1021112012017. The reversal of 1021112012011 is 1102102111201.

It is a happy number.

It is not a de Polignac number, because 1021112012011 - 2¹ = 1021112012009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 1021112011982 and 1021112012000.

It is not an unprimeable number, because it can be changed into a prime (1021112012017) 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, 130472961 + ... + 130480786.

It is an arithmetic number, because the mean of its divisors is an integer number (80373754384).

Almost surely, 2^{1021112012011} is an apocalyptic number.

1021112012011 is a deficient number, since it is larger than the sum of its proper divisors (264868058133).

1021112012011 is a wasteful number, since it uses less digits than its factorization.

1021112012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260953810.

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

Adding to 1021112012011 its reverse (1102102111201), we get a palindrome (2123214123212).

The spelling of 1021112012011 in words is "one trillion, twenty-one billion, one hundred twelve million, twelve thousand, eleven".