1012122112111 has 16 divisors (see below), whose sum is σ = 1117484587296. Its totient is φ = 909024400000.

The previous prime is 1012122112069. The next prime is 1012122112139. The reversal of 1012122112111 is 1112112212101.

It is a cyclic number.

It is not a de Polignac number, because 1012122112111 - 2²⁵ = 1012088557679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012122113111) 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, 475900 + ... + 1500241.

It is an arithmetic number, because the mean of its divisors is an integer number (69842786706).

Almost surely, 2^{1012122112111} is an apocalyptic number.

1012122112111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1012122112111 is a deficient number, since it is larger than the sum of its proper divisors (105362475185).

1012122112111 is a wasteful number, since it uses less digits than its factorization.

1012122112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976714.

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

Adding to 1012122112111 its reverse (1112112212101), we get a palindrome (2124234324212).

It can be divided in two parts, 101 and 2122112111, that added together give a palindrome (2122112212).

The spelling of 1012122112111 in words is "one trillion, twelve billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".