2121121221093 has 24 divisors (see below), whose sum is σ = 3523836221568. Its totient is φ = 1204349077152.

The previous prime is 2121121221067. The next prime is 2121121221097. The reversal of 2121121221093 is 3901221211212.

2121121221093 is a `hidden beast` number, since 21 + 211 + 212 + 210 + 9 + 3 = 666.

It is not a de Polignac number, because 2121121221093 - 2¹⁶ = 2121121155557 is a prime.

It is a super-2 number, since 2×2121121221093² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121121221097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107214921 + ... + 107234702.

It is an arithmetic number, because the mean of its divisors is an integer number (146826509232).

Almost surely, 2^{2121121221093} is an apocalyptic number.

It is an amenable number.

2121121221093 is a deficient number, since it is larger than the sum of its proper divisors (1402715000475).

2121121221093 is a wasteful number, since it uses less digits than its factorization.

2121121221093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214449793 (or 214449790 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 2121121221093 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, ninety-three".