1211221111093 has 8 divisors (see below), whose sum is σ = 1385678301120. Its totient is φ = 1037120321760.

The previous prime is 1211221111057. The next prime is 1211221111109. The reversal of 1211221111093 is 3901111221121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1211221111093 - 2¹³ = 1211221102901 is a prime.

It is a super-2 number, since 2×1211221111093² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211221111193) 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, 89092888 + ... + 89106481.

It is an arithmetic number, because the mean of its divisors is an integer number (173209787640).

Almost surely, 2^{1211221111093} is an apocalyptic number.

It is an amenable number.

1211221111093 is a deficient number, since it is larger than the sum of its proper divisors (174457190027).

1211221111093 is an equidigital number, since it uses as much as digits as its factorization.

1211221111093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178200347.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 1211221111093 in words is "one trillion, two hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, ninety-three".