1011550224420 has 288 divisors, whose sum is σ = 3227339711232. Its totient is φ = 255964161024.

The previous prime is 1011550224407. The next prime is 1011550224427. The reversal of 1011550224420 is 244220551101.

It is a happy number.

1011550224420 is a `hidden beast` number, since 1 + 0 + 1 + 15 + 5 + 0 + 224 + 420 = 666.

It is not an unprimeable number, because it can be changed into a prime (1011550224427) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 788425099 + ... + 788426381.

It is an arithmetic number, because the mean of its divisors is an integer number (11206040664).

Almost surely, 2^{1011550224420} is an apocalyptic number.

1011550224420 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 1011550224420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1613669855616).

1011550224420 is an abundant number, since it is smaller than the sum of its proper divisors (2215789486812).

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

1011550224420 is a wasteful number, since it uses less digits than its factorization.

1011550224420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691 (or 2686 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 1011550224420 its reverse (244220551101), we get a palindrome (1255770775521).

The spelling of 1011550224420 in words is "one trillion, eleven billion, five hundred fifty million, two hundred twenty-four thousand, four hundred twenty".