2221131133212 has 48 divisors (see below), whose sum is σ = 5203548336000. Its totient is φ = 737394989760.

The previous prime is 2221131133211. The next prime is 2221131133213. The reversal of 2221131133212 is 2123311311222.

It is an interprime number because it is at equal distance from previous prime (2221131133211) and next prime (2221131133213).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221131133211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288787 + ... + 3906197.

It is an arithmetic number, because the mean of its divisors is an integer number (108407257000).

Almost surely, 2^{2221131133212} is an apocalyptic number.

It is an amenable number.

2221131133212 is an abundant number, since it is smaller than the sum of its proper divisors (2982417202788).

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

2221131133212 is a wasteful number, since it uses less digits than its factorization.

2221131133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618626 (or 618624 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

Adding to 2221131133212 its reverse (2123311311222), we get a palindrome (4344442444434).

The spelling of 2221131133212 in words is "two trillion, two hundred twenty-one billion, one hundred thirty-one million, one hundred thirty-three thousand, two hundred twelve".