121020011202020 has 144 divisors (see below), whose sum is σ = 297888749383680. Its totient is φ = 41177160864000.

The previous prime is 121020011201939. The next prime is 121020011202049. The reversal of 121020011202020 is 20202110020121.

It is a super-2 number, since 2×121020011202020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 121020011201986 and 121020011202004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84252845 + ... + 85677195.

It is an arithmetic number, because the mean of its divisors is an integer number (2068671870720).

Almost surely, 2^{121020011202020} is an apocalyptic number.

121020011202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020011202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148944374691840).

121020011202020 is an abundant number, since it is smaller than the sum of its proper divisors (176868738181660).

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

121020011202020 is a wasteful number, since it uses less digits than its factorization.

121020011202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425034 (or 1425025 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121020011202020 its reverse (20202110020121), we get a palindrome (141222121222141).

The spelling of 121020011202020 in words is "one hundred twenty-one trillion, twenty billion, eleven million, two hundred two thousand, twenty".