11231353220 has 48 divisors (see below), whose sum is σ = 23975164080. Its totient is φ = 4418912256.

The previous prime is 11231353213. The next prime is 11231353253. The reversal of 11231353220 is 2235313211.

It can be written as a sum of positive squares in 8 ways, for example, as 4556790016 + 6674563204 = 67504^2 + 81698^2 .

It is a super-2 number, since 2×11231353220² (a number of 21 digits) contains 22 as substring.

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, 327194 + ... + 359886.

It is an arithmetic number, because the mean of its divisors is an integer number (499482585).

Almost surely, 2^11231353220 is an apocalyptic number.

11231353220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231353220 is an abundant number, since it is smaller than the sum of its proper divisors (12743810860).

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

11231353220 is a wasteful number, since it uses less digits than its factorization.

11231353220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32984 (or 32982 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 11231353220 its reverse (2235313211), we get a palindrome (13466666431).

The spelling of 11231353220 in words is "eleven billion, two hundred thirty-one million, three hundred fifty-three thousand, two hundred twenty".