201011211101220 has 192 divisors, whose sum is σ = 638039242740480. Its totient is φ = 46874625288192.

The previous prime is 201011211101159. The next prime is 201011211101257. The reversal of 201011211101220 is 22101112110102.

It is a happy number.

201011211101220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201011211101220.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1180965162 + ... + 1181135358.

It is an arithmetic number, because the mean of its divisors is an integer number (3323121055940).

Almost surely, 2^{201011211101220} is an apocalyptic number.

201011211101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201011211101220 is an abundant number, since it is smaller than the sum of its proper divisors (437028031639260).

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

201011211101220 is a wasteful number, since it uses less digits than its factorization.

201011211101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249934 (or 249932 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201011211101220 its reverse (22101112110102), we get a palindrome (223112323211322).

The spelling of 201011211101220 in words is "two hundred one trillion, eleven billion, two hundred eleven million, one hundred one thousand, two hundred twenty".