211221102021093 has 32 divisors (see below), whose sum is σ = 318110409953280. Its totient is φ = 138493667300400.

The previous prime is 211221102021089. The next prime is 211221102021101. The reversal of 211221102021093 is 390120201122112.

211221102021093 is a `hidden beast` number, since 211 + 2 + 211 + 0 + 20 + 210 + 9 + 3 = 666.

It is not a de Polignac number, because 211221102021093 - 2² = 211221102021089 is a prime.

It is a super-2 number, since 2×211221102021093² (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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211221102021043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210829983 + ... + 211829468.

It is an arithmetic number, because the mean of its divisors is an integer number (9940950311040).

Almost surely, 2^{211221102021093} is an apocalyptic number.

It is an amenable number.

211221102021093 is a deficient number, since it is larger than the sum of its proper divisors (106889307932187).

211221102021093 is a wasteful number, since it uses less digits than its factorization.

211221102021093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422659766 (or 422659760 counting only the distinct ones).

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

The spelling of 211221102021093 in words is "two hundred eleven trillion, two hundred twenty-one billion, one hundred two million, twenty-one thousand, ninety-three".