1121499601920 has 264 divisors, whose sum is σ = 3897760005360. Its totient is φ = 298158981120.

The previous prime is 1121499601867. The next prime is 1121499601927. The reversal of 1121499601920 is 291069941211.

1121499601920 is a `hidden beast` number, since 1 + 1 + 2 + 14 + 9 + 9 + 601 + 9 + 20 = 666.

It is a super-2 number, since 2×1121499601920² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121499601927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15215716 + ... + 15289244.

Almost surely, 2^{1121499601920} is an apocalyptic number.

1121499601920 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 1121499601920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1948880002680).

1121499601920 is an abundant number, since it is smaller than the sum of its proper divisors (2776260403440).

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

1121499601920 is a wasteful number, since it uses less digits than its factorization.

1121499601920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73891 (or 73870 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 1121499601920 in words is "one trillion, one hundred twenty-one billion, four hundred ninety-nine million, six hundred one thousand, nine hundred twenty".