2121120254 has 64 divisors (see below), whose sum is σ = 3698196480. Its totient is φ = 903420000.

The previous prime is 2121120229. The next prime is 2121120299. The reversal of 2121120254 is 4520211212.

It is a super-2 number, since 2×2121120254² = 8998302263858049032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4427987 + ... + 4428465.

It is an arithmetic number, because the mean of its divisors is an integer number (57784320).

Almost surely, 2^2121120254 is an apocalyptic number.

2121120254 is a deficient number, since it is larger than the sum of its proper divisors (1577076226).

2121120254 is a wasteful number, since it uses less digits than its factorization.

2121120254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2121120254 is about 46055.6213072845. The cubic root of 2121120254 is about 1284.8578936152.

Adding to 2121120254 its reverse (4520211212), we get a palindrome (6641331466).

The spelling of 2121120254 in words is "two billion, one hundred twenty-one million, one hundred twenty thousand, two hundred fifty-four".