201011101220 has 48 divisors (see below), whose sum is σ = 424856248320. Its totient is φ = 79884216576.

The previous prime is 201011101199. The next prime is 201011101253. The reversal of 201011101220 is 22101110102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11671976 + ... + 11689184.

It is an arithmetic number, because the mean of its divisors is an integer number (8851171840).

Almost surely, 2^201011101220 is an apocalyptic number.

201011101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201011101220 is an abundant number, since it is smaller than the sum of its proper divisors (223845147100).

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

201011101220 is a wasteful number, since it uses less digits than its factorization.

201011101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20964 (or 20962 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 201011101220 its reverse (22101110102), we get a palindrome (223112211322).

The spelling of 201011101220 in words is "two hundred one billion, eleven million, one hundred one thousand, two hundred twenty".