121203233201020 has 48 divisors (see below), whose sum is σ = 255252805936128. Its totient is φ = 48343065451520.

The previous prime is 121203233200961. The next prime is 121203233201023. The reversal of 121203233201020 is 20102332302121.

It is a junction number, because it is equal to n+sod(n) for n = 121203233200982 and 121203233201000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121203233201023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29939460 + ... + 33745780.

It is an arithmetic number, because the mean of its divisors is an integer number (5317766790336).

Almost surely, 2^{121203233201020} is an apocalyptic number.

121203233201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121203233201020 is an abundant number, since it is smaller than the sum of its proper divisors (134049572735108).

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

121203233201020 is a wasteful number, since it uses less digits than its factorization.

121203233201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810870 (or 3810868 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 121203233201020 its reverse (20102332302121), we get a palindrome (141305565503141).

The spelling of 121203233201020 in words is "one hundred twenty-one trillion, two hundred three billion, two hundred thirty-three million, two hundred one thousand, twenty".