21120202121193 has 48 divisors (see below), whose sum is σ = 35246479447296. Its totient is φ = 11936954931840.

The previous prime is 21120202121159. The next prime is 21120202121219. The reversal of 21120202121193 is 39112120202112.

It is not a de Polignac number, because 21120202121193 - 2²⁶ = 21120135012329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120202121693) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3345271 + ... + 7309667.

It is an arithmetic number, because the mean of its divisors is an integer number (734301655152).

Almost surely, 2^{21120202121193} is an apocalyptic number.

It is an amenable number.

21120202121193 is a deficient number, since it is larger than the sum of its proper divisors (14126277326103).

21120202121193 is a wasteful number, since it uses less digits than its factorization.

21120202121193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3965334 (or 3965331 counting only the distinct ones).

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

The spelling of 21120202121193 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, one hundred twenty-one thousand, one hundred ninety-three".