1121221442101 has 4 divisors (see below), whose sum is σ = 1136580640012. Its totient is φ = 1105862244192.

The previous prime is 1121221442057. The next prime is 1121221442123. The reversal of 1121221442101 is 1012441221211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 679966809201 + 441254632900 = 824601^2 + 664270^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121221442101 - 2¹⁷ = 1121221311029 is a prime.

It is a super-3 number, since 3×1121221442101³ (a number of 37 digits) contains 333 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 (1121221442401) 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, 7679598846 + ... + 7679598991.

It is an arithmetic number, because the mean of its divisors is an integer number (284145160003).

Almost surely, 2^{1121221442101} is an apocalyptic number.

It is an amenable number.

1121221442101 is a deficient number, since it is larger than the sum of its proper divisors (15359197911).

1121221442101 is an equidigital number, since it uses as much as digits as its factorization.

1121221442101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15359197910.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 1121221442101 its reverse (1012441221211), we get a palindrome (2133662663312).

The spelling of 1121221442101 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, four hundred forty-two thousand, one hundred one".