1012111221112 has 32 divisors (see below), whose sum is σ = 1899588525120. Its totient is φ = 505554462720.

The previous prime is 1012111221083. The next prime is 1012111221113. The reversal of 1012111221112 is 2111221112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111221113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68235537 + ... + 68250367.

It is an arithmetic number, because the mean of its divisors is an integer number (59362141410).

Almost surely, 2^{1012111221112} is an apocalyptic number.

It is an amenable number.

1012111221112 is a deficient number, since it is larger than the sum of its proper divisors (887477304008).

1012111221112 is a wasteful number, since it uses less digits than its factorization.

1012111221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22711 (or 22707 counting only the distinct ones).

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

Adding to 1012111221112 its reverse (2111221112101), we get a palindrome (3123332333213).

It can be divided in two parts, 101 and 2111221112, that multiplied together give a palindrome (213233332312).

The spelling of 1012111221112 in words is "one trillion, twelve billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".