12221210001020 has 48 divisors (see below), whose sum is σ = 25719686952960. Its totient is φ = 4877990470656.

The previous prime is 12221210000971. The next prime is 12221210001043. The reversal of 12221210001020 is 2010001212221.

It is a junction number, because it is equal to n+sod(n) for n = 12221210000986 and 12221210001004.

It is a congruent number.

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, 18424244 + ... + 19076036.

It is an arithmetic number, because the mean of its divisors is an integer number (535826811520).

Almost surely, 2^{12221210001020} is an apocalyptic number.

12221210001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221210001020 is an abundant number, since it is smaller than the sum of its proper divisors (13498476951940).

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

12221210001020 is a wasteful number, since it uses less digits than its factorization.

12221210001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653814 (or 653812 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12221210001020 its reverse (2010001212221), we get a palindrome (14231211213241).

The spelling of 12221210001020 in words is "twelve trillion, two hundred twenty-one billion, two hundred ten million, one thousand, twenty".