121220000220020 has 96 divisors (see below), whose sum is σ = 295610657690880. Its totient is φ = 41368255165440.

The previous prime is 121220000219993. The next prime is 121220000220047. The reversal of 121220000220020 is 20022000022121.

It is an interprime number because it is at equal distance from previous prime (121220000219993) and next prime (121220000220047).

It is a junction number, because it is equal to n+sod(n) for n = 121220000219977 and 121220000220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299046992 + ... + 299452071.

It is an arithmetic number, because the mean of its divisors is an integer number (3079277684280).

Almost surely, 2^{121220000220020} is an apocalyptic number.

121220000220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220000220020 is an abundant number, since it is smaller than the sum of its proper divisors (174390657470860).

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

121220000220020 is a wasteful number, since it uses less digits than its factorization.

121220000220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598499145 (or 598499143 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 121220000220020 its reverse (20022000022121), we get a palindrome (141242000242141).

The spelling of 121220000220020 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty thousand, twenty".