201101110101220 has 192 divisors, whose sum is σ = 526439523456000. Its totient is φ = 64342604282880.

The previous prime is 201101110101169. The next prime is 201101110101223. The reversal of 201101110101220 is 22101011101102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201101110101220.

It is not an unprimeable number, because it can be changed into a prime (201101110101223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9074515 + ... + 22012474.

It is an arithmetic number, because the mean of its divisors is an integer number (2741872518000).

Almost surely, 2^{201101110101220} is an apocalyptic number.

201101110101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201101110101220 is an abundant number, since it is smaller than the sum of its proper divisors (325338413354780).

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

201101110101220 is a wasteful number, since it uses less digits than its factorization.

201101110101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31087083 (or 31087067 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201101110101220 its reverse (22101011101102), we get a palindrome (223202121202322).

The spelling of 201101110101220 in words is "two hundred one trillion, one hundred one billion, one hundred ten million, one hundred one thousand, two hundred twenty".