121221020022 has 8 divisors (see below), whose sum is σ = 242442040056. Its totient is φ = 40407006672.

The previous prime is 121221020009. The next prime is 121221020051. The reversal of 121221020022 is 220020122121.

It is a sphenic number, since it is the product of 3 distinct primes.

121221020022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 121221019983 and 121221020010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10101751663 + ... + 10101751674.

It is an arithmetic number, because the mean of its divisors is an integer number (30305255007).

Almost surely, 2^121221020022 is an apocalyptic number.

121221020022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121221020022 is a wasteful number, since it uses less digits than its factorization.

121221020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20203503342.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121221020022 its reverse (220020122121), we get a palindrome (341241142143).

The spelling of 121221020022 in words is "one hundred twenty-one billion, two hundred twenty-one million, twenty thousand, twenty-two".