121222110012220 has 96 divisors (see below), whose sum is σ = 308050201533312. Its totient is φ = 39116615344128.

The previous prime is 121222110012193. The next prime is 121222110012229. The reversal of 121222110012220 is 22210011222121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222110012229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266325472 + ... + 266780248.

It is an arithmetic number, because the mean of its divisors is an integer number (3208856265972).

Almost surely, 2^{121222110012220} is an apocalyptic number.

121222110012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222110012220 is an abundant number, since it is smaller than the sum of its proper divisors (186828091521092).

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

121222110012220 is a wasteful number, since it uses less digits than its factorization.

121222110012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566807 (or 566805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121222110012220 its reverse (22210011222121), we get a palindrome (143432121234341).

The spelling of 121222110012220 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, twelve thousand, two hundred twenty".