201201312220 has 48 divisors (see below), whose sum is σ = 447473875968. Its totient is φ = 75832384320.

The previous prime is 201201312209. The next prime is 201201312223. The reversal of 201201312220 is 22213102102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201201312194 and 201201312203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201312223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3233316 + ... + 3294955.

It is an arithmetic number, because the mean of its divisors is an integer number (9322372416).

Almost surely, 2^201201312220 is an apocalyptic number.

201201312220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201201312220 is an abundant number, since it is smaller than the sum of its proper divisors (246272563748).

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

201201312220 is a wasteful number, since it uses less digits than its factorization.

201201312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528370 (or 6528368 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 201201312220 its reverse (22213102102), we get a palindrome (223414414322).

The spelling of 201201312220 in words is "two hundred one billion, two hundred one million, three hundred twelve thousand, two hundred twenty".