12201011001020 has 48 divisors (see below), whose sum is σ = 25822892370240. Its totient is φ = 4842200584704.

The previous prime is 12201011001017. The next prime is 12201011001043. The reversal of 12201011001020 is 2010011010221.

It is a super-2 number, since 2×12201011001020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12201011000992 and 12201011001010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3963542 + ... + 6333378.

It is an arithmetic number, because the mean of its divisors is an integer number (537976924380).

Almost surely, 2^{12201011001020} is an apocalyptic number.

12201011001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201011001020 is an abundant number, since it is smaller than the sum of its proper divisors (13621881369220).

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

12201011001020 is a wasteful number, since it uses less digits than its factorization.

12201011001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371862 (or 2371860 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12201011001020 its reverse (2010011010221), we get a palindrome (14211022011241).

The spelling of 12201011001020 in words is "twelve trillion, two hundred one billion, eleven million, one thousand, twenty".