1121011101221 has 8 divisors (see below), whose sum is σ = 1224711723744. Its totient is φ = 1017608899120.

The previous prime is 1121011101193. The next prime is 1121011101241. The reversal of 1121011101221 is 1221011101211.

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

It is not a de Polignac number, because 1121011101221 - 2³⁴ = 1103831232037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121011101196 and 1121011101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121011101241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74597246 + ... + 74612271.

It is an arithmetic number, because the mean of its divisors is an integer number (153088965468).

Almost surely, 2^{1121011101221} is an apocalyptic number.

1121011101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121011101221 is a deficient number, since it is larger than the sum of its proper divisors (103700622523).

1121011101221 is a wasteful number, since it uses less digits than its factorization.

1121011101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149210211.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121011101221 its reverse (1221011101211), we get a palindrome (2342022202432).

The spelling of 1121011101221 in words is "one trillion, one hundred twenty-one billion, eleven million, one hundred one thousand, two hundred twenty-one".