212222131002 has 128 divisors (see below), whose sum is σ = 573889536000. Its totient is φ = 57998478384.

The previous prime is 212222130997. The next prime is 212222131007. The reversal of 212222131002 is 200131222212.

It is an interprime number because it is at equal distance from previous prime (212222130997) and next prime (212222131007).

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

It is not an unprimeable number, because it can be changed into a prime (212222131007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 176923 + ... + 675089.

It is an arithmetic number, because the mean of its divisors is an integer number (4483512000).

Almost surely, 2^212222131002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222131002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286944768000).

212222131002 is an abundant number, since it is smaller than the sum of its proper divisors (361667404998).

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

212222131002 is a wasteful number, since it uses less digits than its factorization.

212222131002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498222 (or 498202 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212222131002 its reverse (200131222212), we get a palindrome (412353353214).

The spelling of 212222131002 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred thirty-one thousand, two".