1011156221203 has 8 divisors (see below), whose sum is σ = 1039098231248. Its totient is φ = 983246498784.

The previous prime is 1011156221167. The next prime is 1011156221347. The reversal of 1011156221203 is 3021226511101.

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 1011156221203 - 2²⁹ = 1010619350291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011156221503) 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, 8008401 + ... + 8133682.

It is an arithmetic number, because the mean of its divisors is an integer number (129887278906).

Almost surely, 2^{1011156221203} is an apocalyptic number.

1011156221203 is a deficient number, since it is larger than the sum of its proper divisors (27942010045).

1011156221203 is a wasteful number, since it uses less digits than its factorization.

1011156221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16143813.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 1011156221203 in words is "one trillion, eleven billion, one hundred fifty-six million, two hundred twenty-one thousand, two hundred three".