1150121531000 has 256 divisors, whose sum is σ = 2972108280960. Its totient is φ = 413979033600.

The previous prime is 1150121530967. The next prime is 1150121531003. The reversal of 1150121531000 is 1351210511.

It is a happy number.

It is a super-2 number, since 2×1150121531000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1150121531003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84480194 + ... + 84493806.

Almost surely, 2^{1150121531000} is an apocalyptic number.

1150121531000 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 1150121531000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1486054140480).

1150121531000 is an abundant number, since it is smaller than the sum of its proper divisors (1821986749960).

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

1150121531000 is a wasteful number, since it uses less digits than its factorization.

1150121531000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13811 (or 13797 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 1150121531000 its reverse (1351210511), we get a palindrome (1151472741511).

The spelling of 1150121531000 in words is "one trillion, one hundred fifty billion, one hundred twenty-one million, five hundred thirty-one thousand".