1121263403260 has 384 divisors, whose sum is σ = 3370081075200. Its totient is φ = 301573324800.

The previous prime is 1121263403219. The next prime is 1121263403279. The reversal of 1121263403260 is 623043621211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 50699605 + ... + 50721715.

It is an arithmetic number, because the mean of its divisors is an integer number (8776252800).

Almost surely, 2^{1121263403260} is an apocalyptic number.

1121263403260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121263403260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685040537600).

1121263403260 is an abundant number, since it is smaller than the sum of its proper divisors (2248817671940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121263403260 is a wasteful number, since it uses less digits than its factorization.

1121263403260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22317 (or 22315 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 1121263403260 in words is "one trillion, one hundred twenty-one billion, two hundred sixty-three million, four hundred three thousand, two hundred sixty".