201212022220 has 48 divisors (see below), whose sum is σ = 461012128416. Its totient is φ = 73159488000.

The previous prime is 201212022199. The next prime is 201212022233. The reversal of 201212022220 is 22220212102.

It is a junction number, because it is equal to n+sod(n) for n = 201212022194 and 201212022203.

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, 2024080 + ... + 2121160.

It is an arithmetic number, because the mean of its divisors is an integer number (9604419342).

Almost surely, 2^201212022220 is an apocalyptic number.

201212022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212022220 is an abundant number, since it is smaller than the sum of its proper divisors (259800106196).

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

201212022220 is a wasteful number, since it uses less digits than its factorization.

201212022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106522 (or 106520 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 201212022220 its reverse (22220212102), we get a palindrome (223432234322).

The spelling of 201212022220 in words is "two hundred one billion, two hundred twelve million, twenty-two thousand, two hundred twenty".