53221331212 has 12 divisors (see below), whose sum is σ = 106442662480. Its totient is φ = 22809141936.

The previous prime is 53221331201. The next prime is 53221331213. The reversal of 53221331212 is 21213312235.

53221331212 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (53221331213) 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, 950380887 + ... + 950380942.

Almost surely, 2^53221331212 is an apocalyptic number.

It is an amenable number.

53221331212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

53221331212 is a wasteful number, since it uses less digits than its factorization.

53221331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900761840 (or 1900761838 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

Adding to 53221331212 its reverse (21213312235), we get a palindrome (74434643447).

The spelling of 53221331212 in words is "fifty-three billion, two hundred twenty-one million, three hundred thirty-one thousand, two hundred twelve".