201001212111220 has 48 divisors (see below), whose sum is σ = 422238128114880. Its totient is φ = 80374661773056.

The previous prime is 201001212111149. The next prime is 201001212111247. The reversal of 201001212111220 is 22111212100102.

It is a junction number, because it is equal to n+sod(n) for n = 201001212111194 and 201001212111203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1848419611 + ... + 1848528349.

It is an arithmetic number, because the mean of its divisors is an integer number (8796627669060).

Almost surely, 2^{201001212111220} is an apocalyptic number.

201001212111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201001212111220 is an abundant number, since it is smaller than the sum of its proper divisors (221236916003660).

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

201001212111220 is a wasteful number, since it uses less digits than its factorization.

201001212111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137584 (or 137582 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201001212111220 its reverse (22111212100102), we get a palindrome (223112424211322).

The spelling of 201001212111220 in words is "two hundred one trillion, one billion, two hundred twelve million, one hundred eleven thousand, two hundred twenty".