202122222012 has 36 divisors (see below), whose sum is σ = 511003953096. Its totient is φ = 67363011360.

The previous prime is 202122222011. The next prime is 202122222037. The reversal of 202122222012 is 210222221202.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122222011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237163 + ... + 678594.

Almost surely, 2^202122222012 is an apocalyptic number.

It is an amenable number.

202122222012 is an abundant number, since it is smaller than the sum of its proper divisors (308881731084).

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

202122222012 is a wasteful number, since it uses less digits than its factorization.

202122222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921898 (or 921893 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 202122222012 its reverse (210222221202), we get a palindrome (412344443214).

The spelling of 202122222012 in words is "two hundred two billion, one hundred twenty-two million, two hundred twenty-two thousand, twelve".