21011112122193 has 20 divisors (see below), whose sum is σ = 31387115694528. Its totient is φ = 14007343043160.

The previous prime is 21011112122179. The next prime is 21011112122201. The reversal of 21011112122193 is 39122121111012.

21011112122193 is a `hidden beast` number, since 210 + 11 + 11 + 212 + 219 + 3 = 666.

It is not a de Polignac number, because 21011112122193 - 2⁶ = 21011112122129 is a prime.

It is a super-2 number, since 2×21011112122193² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21011112122123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22288780 + ... + 23212322.

Almost surely, 2^{21011112122193} is an apocalyptic number.

It is an amenable number.

21011112122193 is a deficient number, since it is larger than the sum of its proper divisors (10376003572335).

21011112122193 is an equidigital number, since it uses as much as digits as its factorization.

21011112122193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204426 (or 1204417 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 27.

The spelling of 21011112122193 in words is "twenty-one trillion, eleven billion, one hundred twelve million, one hundred twenty-two thousand, one hundred ninety-three".