1020122011111 has 8 divisors (see below), whose sum is σ = 1165863089664. Its totient is φ = 874383273240.

The previous prime is 1020122011109. The next prime is 1020122011133. The reversal of 1020122011111 is 1111102210201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020122011111 - 2¹ = 1020122011109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020122011091 and 1020122011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020122041111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477366 + ... + 1506028.

It is an arithmetic number, because the mean of its divisors is an integer number (145732886208).

Almost surely, 2^{1020122011111} is an apocalyptic number.

1020122011111 is a deficient number, since it is larger than the sum of its proper divisors (145741078553).

1020122011111 is a wasteful number, since it uses less digits than its factorization.

1020122011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170341.

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

Adding to 1020122011111 its reverse (1111102210201), we get a palindrome (2131224221312).

The spelling of 1020122011111 in words is "one trillion, twenty billion, one hundred twenty-two million, eleven thousand, one hundred eleven".