121020222200020 has 144 divisors (see below), whose sum is σ = 305933785234560. Its totient is φ = 39933660476160.

The previous prime is 121020222199979. The next prime is 121020222200023. The reversal of 121020222200020 is 20002222020121.

It is a junction number, because it is equal to n+sod(n) for n = 121020222199967 and 121020222200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020222200023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30743832 + ... + 34456111.

It is an arithmetic number, because the mean of its divisors is an integer number (2124540175240).

Almost surely, 2^{121020222200020} is an apocalyptic number.

121020222200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020222200020 is an abundant number, since it is smaller than the sum of its proper divisors (184913563034540).

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

121020222200020 is a wasteful number, since it uses less digits than its factorization.

121020222200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65200046 (or 65200033 counting only the distinct ones).

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

Adding to 121020222200020 its reverse (20002222020121), we get a palindrome (141022444220141).

The spelling of 121020222200020 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty-two million, two hundred thousand, twenty".