121110201222020 has 24 divisors (see below), whose sum is σ = 254560756627800. Its totient is φ = 48400397810432.

The previous prime is 121110201221927. The next prime is 121110201222029. The reversal of 121110201222020 is 20222102011121.

It can be written as a sum of positive squares in 4 ways, for example, as 14903861744704 + 106206339477316 = 3860552^2 + 10305646^2 .

It is a super-3 number, since 3×121110201222020³ (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 121110201222020.

It is not an unprimeable number, because it can be changed into a prime (121110201222029) 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, 2730144665 + ... + 2730189024.

It is an arithmetic number, because the mean of its divisors is an integer number (10606698192825).

Almost surely, 2^{121110201222020} is an apocalyptic number.

121110201222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110201222020 is an abundant number, since it is smaller than the sum of its proper divisors (133450555405780).

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

121110201222020 is a wasteful number, since it uses less digits than its factorization.

121110201222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460334807 (or 5460334805 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121110201222020 its reverse (20222102011121), we get a palindrome (141332303233141).

The spelling of 121110201222020 in words is "one hundred twenty-one trillion, one hundred ten billion, two hundred one million, two hundred twenty-two thousand, twenty".