121213330010020 has 24 divisors (see below), whose sum is σ = 254548199816064. Its totient is φ = 48485292614496.

The previous prime is 121213330009991. The next prime is 121213330010023. The reversal of 121213330010020 is 20010033312121.

It is a super-3 number, since 3×121213330010020³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121213330010020.

It is not an unprimeable number, because it can be changed into a prime (121213330010023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47928447 + ... + 50394073.

It is an arithmetic number, because the mean of its divisors is an integer number (10606174992336).

Almost surely, 2^{121213330010020} is an apocalyptic number.

121213330010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121213330010020 is an abundant number, since it is smaller than the sum of its proper divisors (133334869806044).

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

121213330010020 is a wasteful number, since it uses less digits than its factorization.

121213330010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923699 (or 4923697 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121213330010020 its reverse (20010033312121), we get a palindrome (141223363322141).

The spelling of 121213330010020 in words is "one hundred twenty-one trillion, two hundred thirteen billion, three hundred thirty million, ten thousand, twenty".