201101022220 has 24 divisors (see below), whose sum is σ = 482642453664. Its totient is φ = 68948921856.

The previous prime is 201101022197. The next prime is 201101022223. The reversal of 201101022220 is 22220101102.

It is a happy number.

It is a super-2 number, since 2×201101022220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201101022220.

It is not an unprimeable number, because it can be changed into a prime (201101022223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 718217797 + ... + 718218076.

It is an arithmetic number, because the mean of its divisors is an integer number (20110102236).

Almost surely, 2^201101022220 is an apocalyptic number.

201101022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201101022220 is an abundant number, since it is smaller than the sum of its proper divisors (281541431444).

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

201101022220 is a wasteful number, since it uses less digits than its factorization.

201101022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436435889 (or 1436435887 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201101022220 its reverse (22220101102), we get a palindrome (223321123322).

The spelling of 201101022220 in words is "two hundred one billion, one hundred one million, twenty-two thousand, two hundred twenty".