1121221100101 has 4 divisors (see below), whose sum is σ = 1127934999072. Its totient is φ = 1114507201132.

The previous prime is 1121221100057. The next prime is 1121221100119. The reversal of 1121221100101 is 1010011221211.

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 1121221100101 - 2⁹ = 1121221099589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121221100401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3356949235 + ... + 3356949568.

It is an arithmetic number, because the mean of its divisors is an integer number (281983749768).

Almost surely, 2^{1121221100101} is an apocalyptic number.

It is an amenable number.

1121221100101 is a deficient number, since it is larger than the sum of its proper divisors (6713898971).

1121221100101 is an equidigital number, since it uses as much as digits as its factorization.

1121221100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713898970.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1121221100101 its reverse (1010011221211), we get a palindrome (2131232321312).

The spelling of 1121221100101 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thousand, one hundred one".