22212121302 has 72 divisors (see below), whose sum is σ = 57789605952. Its totient is φ = 6141592800.

The previous prime is 22212121249. The next prime is 22212121303. The reversal of 22212121302 is 20312121222.

22212121302 is a `hidden beast` number, since 222 + 121 + 21 + 302 = 666.

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 (22212121303) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 378849 + ... + 433532.

It is an arithmetic number, because the mean of its divisors is an integer number (802633416).

Almost surely, 2^22212121302 is an apocalyptic number.

22212121302 is an abundant number, since it is smaller than the sum of its proper divisors (35577484650).

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

22212121302 is a wasteful number, since it uses less digits than its factorization.

22212121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812434 (or 812424 counting only the distinct ones).

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

Adding to 22212121302 its reverse (20312121222), we get a palindrome (42524242524).

The spelling of 22212121302 in words is "twenty-two billion, two hundred twelve million, one hundred twenty-one thousand, three hundred two".