1121000220091 has 8 divisors (see below), whose sum is σ = 1121444708624. Its totient is φ = 1120555810080.

The previous prime is 1121000220079. The next prime is 1121000220133. The reversal of 1121000220091 is 1900220001211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1121000220091 - 2¹⁵ = 1121000187323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121000221091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59966056 + ... + 59984746.

It is an arithmetic number, because the mean of its divisors is an integer number (140180588578).

Almost surely, 2^{1121000220091} is an apocalyptic number.

1121000220091 is a deficient number, since it is larger than the sum of its proper divisors (444488533).

1121000220091 is a wasteful number, since it uses less digits than its factorization.

1121000220091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39261.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 1121000220091 in words is "one trillion, one hundred twenty-one billion, two hundred twenty thousand, ninety-one".