213002121222 has 48 divisors (see below), whose sum is σ = 514171487232. Its totient is φ = 63172773360.

The previous prime is 213002121203. The next prime is 213002121223. The reversal of 213002121222 is 222121200312.

213002121222 is a `hidden beast` number, since 21 + 300 + 2 + 121 + 222 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 213002121195 and 213002121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213002121223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11435038 + ... + 11453649.

It is an arithmetic number, because the mean of its divisors is an integer number (10711905984).

Almost surely, 2^213002121222 is an apocalyptic number.

213002121222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213002121222 is an abundant number, since it is smaller than the sum of its proper divisors (301169366010).

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

213002121222 is a wasteful number, since it uses less digits than its factorization.

213002121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22888753 (or 22888750 counting only the distinct ones).

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

Adding to 213002121222 its reverse (222121200312), we get a palindrome (435123321534).

The spelling of 213002121222 in words is "two hundred thirteen billion, two million, one hundred twenty-one thousand, two hundred twenty-two".