211221110021193 has 80 divisors (see below), whose sum is σ = 318383686146240. Its totient is φ = 139546328701824.

The previous prime is 211221110021191. The next prime is 211221110021197. The reversal of 211221110021193 is 391120011122112.

211221110021193 is a `hidden beast` number, since 211 + 221 + 1 + 10 + 0 + 211 + 9 + 3 = 666.

211221110021193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211221110021193 - 2¹ = 211221110021191 is a prime.

It is a super-2 number, since 2×211221110021193² (a number of 29 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 (211221110021191) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5159390118 + ... + 5159431056.

It is an arithmetic number, because the mean of its divisors is an integer number (3979796076828).

Almost surely, 2^{211221110021193} is an apocalyptic number.

It is an amenable number.

211221110021193 is a deficient number, since it is larger than the sum of its proper divisors (107162576125047).

211221110021193 is a wasteful number, since it uses less digits than its factorization.

211221110021193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42468 (or 42459 counting only the distinct ones).

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

The spelling of 211221110021193 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred ten million, twenty-one thousand, one hundred ninety-three".