11231212023220 has 24 divisors (see below), whose sum is σ = 26954908856064. Its totient is φ = 3850701265056.

The previous prime is 11231212023193. The next prime is 11231212023253. The reversal of 11231212023220 is 2232021213211.

It is a super-2 number, since 2×11231212023220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231212023191 and 11231212023200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40111471372 + ... + 40111471651.

It is an arithmetic number, because the mean of its divisors is an integer number (1123121202336).

Almost surely, 2^{11231212023220} is an apocalyptic number.

11231212023220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231212023220 is an abundant number, since it is smaller than the sum of its proper divisors (15723696832844).

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

11231212023220 is a wasteful number, since it uses less digits than its factorization.

11231212023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80222943039 (or 80222943037 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 11231212023220 its reverse (2232021213211), we get a palindrome (13463233236431).

The spelling of 11231212023220 in words is "eleven trillion, two hundred thirty-one billion, two hundred twelve million, twenty-three thousand, two hundred twenty".