201210001221020 has 24 divisors (see below), whose sum is σ = 460953820979568. Its totient is φ = 73167273171200.

The previous prime is 201210001220947. The next prime is 201210001221043. The reversal of 201210001221020 is 20122100012102.

It is a junction number, because it is equal to n+sod(n) for n = 201210001220986 and 201210001221004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457295457101 + ... + 457295457540.

It is an arithmetic number, because the mean of its divisors is an integer number (19206409207482).

Almost surely, 2^{201210001221020} is an apocalyptic number.

201210001221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201210001221020 is an abundant number, since it is smaller than the sum of its proper divisors (259743819758548).

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

201210001221020 is a wasteful number, since it uses less digits than its factorization.

201210001221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914590914661 (or 914590914659 counting only the distinct ones).

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

Adding to 201210001221020 its reverse (20122100012102), we get a palindrome (221332101233122).

The spelling of 201210001221020 in words is "two hundred one trillion, two hundred ten billion, one million, two hundred twenty-one thousand, twenty".