201021112220 has 48 divisors (see below), whose sum is σ = 423883484640. Its totient is φ = 80077422336.

The previous prime is 201021112207. The next prime is 201021112247. The reversal of 201021112220 is 22211120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021112195 and 201021112204.

It is a congruent number.

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, 17011034 + ... + 17022846.

It is an arithmetic number, because the mean of its divisors is an integer number (8830905930).

Almost surely, 2^201021112220 is an apocalyptic number.

201021112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021112220 is an abundant number, since it is smaller than the sum of its proper divisors (222862372420).

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

201021112220 is a wasteful number, since it uses less digits than its factorization.

201021112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15254 (or 15252 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201021112220 its reverse (22211120102), we get a palindrome (223232232322).

The spelling of 201021112220 in words is "two hundred one billion, twenty-one million, one hundred twelve thousand, two hundred twenty".