1011203233320 has 192 divisors, whose sum is σ = 3544043181120. Its totient is φ = 230139872256.

The previous prime is 1011203233291. The next prime is 1011203233361. The reversal of 1011203233320 is 233323021101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1000999 + ... + 1739081.

It is an arithmetic number, because the mean of its divisors is an integer number (18458558235).

Almost surely, 2^{1011203233320} is an apocalyptic number.

1011203233320 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 1011203233320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1772021590560).

1011203233320 is an abundant number, since it is smaller than the sum of its proper divisors (2532839947800).

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

1011203233320 is a wasteful number, since it uses less digits than its factorization.

1011203233320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738344 (or 738333 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1011203233320 its reverse (233323021101), we get a palindrome (1244526254421).

The spelling of 1011203233320 in words is "one trillion, eleven billion, two hundred three million, two hundred thirty-three thousand, three hundred twenty".