1012012021111 has 32 divisors (see below), whose sum is σ = 1315367101440. Its totient is φ = 756671376384.

The previous prime is 1012012021109. The next prime is 1012012021177. The reversal of 1012012021111 is 1111202102101.

It is a happy number.

It is not a de Polignac number, because 1012012021111 - 2¹ = 1012012021109 is a prime.

It is a super-2 number, since 2×1012012021111² (a number of 25 digits) contains 22 as substring.

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 = 1012012021091 and 1012012021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012012021711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2739066 + ... + 3086503.

It is an arithmetic number, because the mean of its divisors is an integer number (41105221920).

Almost surely, 2^{1012012021111} is an apocalyptic number.

1012012021111 is a deficient number, since it is larger than the sum of its proper divisors (303355080329).

1012012021111 is a wasteful number, since it uses less digits than its factorization.

1012012021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5825695.

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

Adding to 1012012021111 its reverse (1111202102101), we get a palindrome (2123214123212).

The spelling of 1012012021111 in words is "one trillion, twelve billion, twelve million, twenty-one thousand, one hundred eleven".