140121011 has 4 divisors (see below), whose sum is σ = 144952800. Its totient is φ = 135289224.

The previous prime is 140120999. The next prime is 140121049. The reversal of 140121011 is 110121041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110121041 = 1447 ⋅76103.

It is a cyclic number.

It is not a de Polignac number, because 140121011 - 2⁶ = 140120947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140120983 and 140121001.

It is not an unprimeable number, because it can be changed into a prime (140121071) 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 3 ways as a sum of consecutive naturals, for example, 2415851 + ... + 2415908.

It is an arithmetic number, because the mean of its divisors is an integer number (36238200).

Almost surely, 2^140121011 is an apocalyptic number.

140121011 is a deficient number, since it is larger than the sum of its proper divisors (4831789).

140121011 is an equidigital number, since it uses as much as digits as its factorization.

140121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831788.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 140121011 is about 11837.2721097388. The cubic root of 140121011 is about 519.3989739827.

Adding to 140121011 its reverse (110121041), we get a palindrome (250242052).

The spelling of 140121011 in words is "one hundred forty million, one hundred twenty-one thousand, eleven".