201121011112220 has 24 divisors (see below), whose sum is σ = 422354715549984. Its totient is φ = 80448291642176.

The previous prime is 201121011112181. The next prime is 201121011112223. The reversal of 201121011112220 is 22211110121102.

201121011112220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201121011112220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121011112223) 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, 8395289 + ... + 21742191.

It is an arithmetic number, because the mean of its divisors is an integer number (17598113147916).

Almost surely, 2^{201121011112220} is an apocalyptic number.

201121011112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201121011112220 is an abundant number, since it is smaller than the sum of its proper divisors (221233704437764).

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

201121011112220 is a wasteful number, since it uses less digits than its factorization.

201121011112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14100349 (or 14100347 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201121011112220 its reverse (22211110121102), we get a palindrome (223332121233322).

The spelling of 201121011112220 in words is "two hundred one trillion, one hundred twenty-one billion, eleven million, one hundred twelve thousand, two hundred twenty".