12202121120 has 72 divisors (see below), whose sum is σ = 33534065124. Its totient is φ = 4183581696.

The previous prime is 12202121101. The next prime is 12202121123. The reversal of 12202121120 is 2112120221.

It can be written as a sum of positive squares in 2 ways, for example, as 10680809104 + 1521312016 = 103348^2 + 39004^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12202121095 and 12202121104.

It is not an unprimeable number, because it can be changed into a prime (12202121123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770357 + ... + 786036.

Almost surely, 2^12202121120 is an apocalyptic number.

12202121120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12202121120 is an abundant number, since it is smaller than the sum of its proper divisors (21331944004).

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

12202121120 is a wasteful number, since it uses less digits than its factorization.

12202121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556422 (or 1556407 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12202121120 its reverse (2112120221), we get a palindrome (14314241341).

The spelling of 12202121120 in words is "twelve billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty".