121011142 has 32 divisors (see below), whose sum is σ = 223948800. Its totient is φ = 47892768.

The previous prime is 121011109. The next prime is 121011181. The reversal of 121011142 is 241110121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2859 + ... + 15817.

It is an arithmetic number, because the mean of its divisors is an integer number (6998400).

Almost surely, 2^121011142 is an apocalyptic number.

121011142 is a deficient number, since it is larger than the sum of its proper divisors (102937658).

121011142 is a wasteful number, since it uses less digits than its factorization.

121011142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13020.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 121011142 is about 11000.5064428871. The cubic root of 121011142 is about 494.6239254860.

Adding to 121011142 its reverse (241110121), we get a palindrome (362121263).

The spelling of 121011142 in words is "one hundred twenty-one million, eleven thousand, one hundred forty-two".