2121221294 has 8 divisors (see below), whose sum is σ = 3349296840. Its totient is φ = 1004789016.

The previous prime is 2121221281. The next prime is 2121221303. The reversal of 2121221294 is 4921221212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×2121221294³ (a number of 29 digits) contains 333 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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27910769 + ... + 27910844.

It is an arithmetic number, because the mean of its divisors is an integer number (418662105).

Almost surely, 2^2121221294 is an apocalyptic number.

2121221294 is a deficient number, since it is larger than the sum of its proper divisors (1228075546).

2121221294 is a wasteful number, since it uses less digits than its factorization.

2121221294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55821634.

The product of its digits is 1152, while the sum is 26.

The square root of 2121221294 is about 46056.7182287232. The cubic root of 2121221294 is about 1284.8782947813.

The spelling of 2121221294 in words is "two billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred ninety-four".