1135724421020 has 48 divisors (see below), whose sum is σ = 2728166181888. Its totient is φ = 389044434240.

The previous prime is 1135724420993. The next prime is 1135724421047. The reversal of 1135724421020 is 201244275311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1135724420993) and next prime (1135724421047).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3454676 + ... + 3769115.

It is an arithmetic number, because the mean of its divisors is an integer number (56836795456).

Almost surely, 2^{1135724421020} is an apocalyptic number.

1135724421020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135724421020 is an abundant number, since it is smaller than the sum of its proper divisors (1592441760868).

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

1135724421020 is a wasteful number, since it uses less digits than its factorization.

1135724421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224930 (or 7224928 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 1135724421020 its reverse (201244275311), we get a palindrome (1336968696331).

The spelling of 1135724421020 in words is "one trillion, one hundred thirty-five billion, seven hundred twenty-four million, four hundred twenty-one thousand, twenty".