121222022000020 has 12 divisors (see below), whose sum is σ = 254566246200084. Its totient is φ = 48488808800000.

The previous prime is 121222022000011. The next prime is 121222022000033. The reversal of 121222022000020 is 20000220222121.

It can be written as a sum of positive squares in 2 ways, for example, as 23005280289924 + 98216741710096 = 4796382^2 + 9910436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121222021999958 and 121222022000003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030550549981 + ... + 3030550550020.

It is an arithmetic number, because the mean of its divisors is an integer number (21213853850007).

Almost surely, 2^{121222022000020} is an apocalyptic number.

121222022000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222022000020 is an abundant number, since it is smaller than the sum of its proper divisors (133344224200064).

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

121222022000020 is a wasteful number, since it uses less digits than its factorization.

121222022000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061101100010 (or 6061101100008 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121222022000020 its reverse (20000220222121), we get a palindrome (141222242222141).

The spelling of 121222022000020 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, twenty-two million, twenty", and thus it is an aban number.