1121232203220 has 48 divisors (see below), whose sum is σ = 3224300179968. Its totient is φ = 290914300800.

The previous prime is 1121232203149. The next prime is 1121232203249. The reversal of 1121232203220 is 223022321211.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 252527556 + ... + 252531995.

It is an arithmetic number, because the mean of its divisors is an integer number (67172920416).

Almost surely, 2^{1121232203220} is an apocalyptic number.

1121232203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121232203220 is an abundant number, since it is smaller than the sum of its proper divisors (2103067976748).

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

1121232203220 is a wasteful number, since it uses less digits than its factorization.

1121232203220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505059600 (or 505059598 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1121232203220 its reverse (223022321211), we get a palindrome (1344254524431).

The spelling of 1121232203220 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-two million, two hundred three thousand, two hundred twenty".