1100221201121 has 4 divisors (see below), whose sum is σ = 1257395658432. Its totient is φ = 943046743812.

The previous prime is 1100221201109. The next prime is 1100221201127. The reversal of 1100221201121 is 1211021220011.

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 a de Polignac number, because none of the positive numbers 2^k-1100221201121 is a prime.

It is a super-2 number, since 2×1100221201121² (a number of 25 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 = 1100221201096 and 1100221201105.

It is not an unprimeable number, because it can be changed into a prime (1100221201127) 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, 78587228645 + ... + 78587228658.

It is an arithmetic number, because the mean of its divisors is an integer number (314348914608).

Almost surely, 2^{1100221201121} is an apocalyptic number.

It is an amenable number.

1100221201121 is a deficient number, since it is larger than the sum of its proper divisors (157174457311).

1100221201121 is an equidigital number, since it uses as much as digits as its factorization.

1100221201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157174457310.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1100221201121 its reverse (1211021220011), we get a palindrome (2311242421132).

The spelling of 1100221201121 in words is "one trillion, one hundred billion, two hundred twenty-one million, two hundred one thousand, one hundred twenty-one".