1010111121 has 8 divisors (see below), whose sum is σ = 1496460960. Its totient is φ = 673407396.

The previous prime is 1010111119. The next prime is 1010111129. The reversal of 1010111121 is 1211110101.

It is not a de Polignac number, because 1010111121 - 2¹ = 1010111119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1010111129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18705735 + ... + 18705788.

It is an arithmetic number, because the mean of its divisors is an integer number (187057620).

Almost surely, 2^1010111121 is an apocalyptic number.

It is an amenable number.

1010111121 is a deficient number, since it is larger than the sum of its proper divisors (486349839).

1010111121 is an equidigital number, since it uses as much as digits as its factorization.

1010111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37411532 (or 37411526 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 1010111121 is about 31782.2453737932. The cubic root of 1010111121 is about 1003.3590776302.

Adding to 1010111121 its reverse (1211110101), we get a palindrome (2221221222).

The spelling of 1010111121 in words is "one billion, ten million, one hundred eleven thousand, one hundred twenty-one".