1121263403261 has 8 divisors (see below), whose sum is σ = 1127699496000. Its totient is φ = 1114829222560.

The previous prime is 1121263403219. The next prime is 1121263403279. The reversal of 1121263403261 is 1623043621211.

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 1121263403261 - 2³⁴ = 1104083534077 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 (1121263403291) 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, 706601 + ... + 1655841.

It is an arithmetic number, because the mean of its divisors is an integer number (140962437000).

Almost surely, 2^{1121263403261} is an apocalyptic number.

It is an amenable number.

1121263403261 is a deficient number, since it is larger than the sum of its proper divisors (6436092739).

1121263403261 is an equidigital number, since it uses as much as digits as its factorization.

1121263403261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956019.

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 1121263403261 in words is "one trillion, one hundred twenty-one billion, two hundred sixty-three million, four hundred three thousand, two hundred sixty-one".