21212102201193 has 24 divisors (see below), whose sum is σ = 31774766989056. Its totient is φ = 14141285758800.

The previous prime is 21212102201161. The next prime is 21212102201201. The reversal of 21212102201193 is 39110220121212.

21212102201193 is a `hidden beast` number, since 21 + 21 + 210 + 220 + 1 + 193 = 666.

It is not a de Polignac number, because 21212102201193 - 2⁵ = 21212102201161 is a prime.

It is a super-3 number, since 3×21212102201193³ (a number of 41 digits) contains 333 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 (21212102201123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37753303 + ... + 38311043.

It is an arithmetic number, because the mean of its divisors is an integer number (1323948624544).

Almost surely, 2^{21212102201193} is an apocalyptic number.

It is an amenable number.

21212102201193 is a deficient number, since it is larger than the sum of its proper divisors (10562664787863).

21212102201193 is an equidigital number, since it uses as much as digits as its factorization.

21212102201193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714267 (or 714255 counting only the distinct ones).

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

The spelling of 21212102201193 in words is "twenty-one trillion, two hundred twelve billion, one hundred two million, two hundred one thousand, one hundred ninety-three".