120113111221 has 4 divisors (see below), whose sum is σ = 123987727744. Its totient is φ = 116238494700.

The previous prime is 120113111213. The next prime is 120113111257. The reversal of 120113111221 is 122111311021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120113111221 - 2³ = 120113111213 is a prime.

It is a super-2 number, since 2×120113111221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120113111195 and 120113111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120113111291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937308215 + ... + 1937308276.

It is an arithmetic number, because the mean of its divisors is an integer number (30996931936).

Almost surely, 2^120113111221 is an apocalyptic number.

It is an amenable number.

120113111221 is a deficient number, since it is larger than the sum of its proper divisors (3874616523).

120113111221 is an equidigital number, since it uses as much as digits as its factorization.

120113111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874616522.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 120113111221 its reverse (122111311021), we get a palindrome (242224422242).

The spelling of 120113111221 in words is "one hundred twenty billion, one hundred thirteen million, one hundred eleven thousand, two hundred twenty-one".