22120312302 has 32 divisors (see below), whose sum is σ = 53625000960. Its totient is φ = 6703124760.

The previous prime is 22120312301. The next prime is 22120312309. The reversal of 22120312302 is 20321302122.

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 (22120312301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18619198 + ... + 18620385.

It is an arithmetic number, because the mean of its divisors is an integer number (1675781280).

Almost surely, 2^22120312302 is an apocalyptic number.

22120312302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22120312302 is an abundant number, since it is smaller than the sum of its proper divisors (31504688658).

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

22120312302 is a wasteful number, since it uses less digits than its factorization.

22120312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37239605 (or 37239599 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22120312302 its reverse (20321302122), we get a palindrome (42441614424).

The spelling of 22120312302 in words is "twenty-two billion, one hundred twenty million, three hundred twelve thousand, three hundred two".