21211222120193 has 8 divisors (see below), whose sum is σ = 24603208600512. Its totient is φ = 17909688612816.

The previous prime is 21211222120163. The next prime is 21211222120211. The reversal of 21211222120193 is 39102122211212.

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

It is not a de Polignac number, because 21211222120193 - 2¹⁴ = 21211222103809 is a prime.

It is a super-2 number, since 2×21211222120193² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211222120163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22613242730 + ... + 22613243667.

It is an arithmetic number, because the mean of its divisors is an integer number (3075401075064).

Almost surely, 2^{21211222120193} is an apocalyptic number.

It is an amenable number.

21211222120193 is a deficient number, since it is larger than the sum of its proper divisors (3391986480319).

21211222120193 is an equidigital number, since it uses as much as digits as its factorization.

21211222120193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45226486471.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 21211222120193 in words is "twenty-one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, one hundred ninety-three".