11001232420 has 12 divisors (see below), whose sum is σ = 23102588124. Its totient is φ = 4400492960.

The previous prime is 11001232409. The next prime is 11001232439. The reversal of 11001232420 is 2423210011.

It can be written as a sum of positive squares in 2 ways, for example, as 7068437476 + 3932794944 = 84074^2 + 62712^2 .

It is a super-2 number, since 2×11001232420² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11001232394 and 11001232403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275030791 + ... + 275030830.

It is an arithmetic number, because the mean of its divisors is an integer number (1925215677).

Almost surely, 2^11001232420 is an apocalyptic number.

11001232420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001232420 is an abundant number, since it is smaller than the sum of its proper divisors (12101355704).

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

11001232420 is a wasteful number, since it uses less digits than its factorization.

11001232420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550061630 (or 550061628 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11001232420 its reverse (2423210011), we get a palindrome (13424442431).

The spelling of 11001232420 in words is "eleven billion, one million, two hundred thirty-two thousand, four hundred twenty".