2121140120 has 64 divisors (see below), whose sum is σ = 5327562240. Its totient is φ = 753379200.

The previous prime is 2121140117. The next prime is 2121140141. The reversal of 2121140120 is 210411212.

It is a happy number.

It is a super-2 number, since 2×2121140120² = 8998470817347228800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121140095 and 2121140104.

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, 37136 + ... + 74975.

It is an arithmetic number, because the mean of its divisors is an integer number (83243160).

Almost surely, 2^2121140120 is an apocalyptic number.

2121140120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121140120 is an abundant number, since it is smaller than the sum of its proper divisors (3206422120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121140120 is a wasteful number, since it uses less digits than its factorization.

2121140120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112176 (or 112172 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2121140120 is about 46055.8369807780. The cubic root of 2121140120 is about 1284.8619048457.

Adding to 2121140120 its reverse (210411212), we get a palindrome (2331551332).

It can be divided in two parts, 2121 and 140120, that added together give a palindrome (142241).

The spelling of 2121140120 in words is "two billion, one hundred twenty-one million, one hundred forty thousand, one hundred twenty".