200221021212 has 12 divisors (see below), whose sum is σ = 467182382856. Its totient is φ = 66740340400.

The previous prime is 200221021211. The next prime is 200221021213. The reversal of 200221021212 is 212120122002.

It is an interprime number because it is at equal distance from previous prime (200221021211) and next prime (200221021213).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 200221021191 and 200221021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221021211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8342542539 + ... + 8342542562.

It is an arithmetic number, because the mean of its divisors is an integer number (38931865238).

Almost surely, 2^200221021212 is an apocalyptic number.

It is an amenable number.

200221021212 is an abundant number, since it is smaller than the sum of its proper divisors (266961361644).

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

200221021212 is a wasteful number, since it uses less digits than its factorization.

200221021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16685085108 (or 16685085106 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200221021212 its reverse (212120122002), we get a palindrome (412341143214).

The spelling of 200221021212 in words is "two hundred billion, two hundred twenty-one million, twenty-one thousand, two hundred twelve".