121020222010220 has 96 divisors (see below), whose sum is σ = 274397517184896. Its totient is φ = 44569198080000.

The previous prime is 121020222010153. The next prime is 121020222010223. The reversal of 121020222010220 is 22010222020121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121020222010223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3014107145 + ... + 3014147295.

It is an arithmetic number, because the mean of its divisors is an integer number (2858307470676).

Almost surely, 2^{121020222010220} is an apocalyptic number.

121020222010220 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 121020222010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137198758592448).

121020222010220 is an abundant number, since it is smaller than the sum of its proper divisors (153377295174676).

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

121020222010220 is a wasteful number, since it uses less digits than its factorization.

121020222010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69771 (or 69769 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121020222010220 its reverse (22010222020121), we get a palindrome (143030444030341).

Subtracting from 121020222010220 its reverse (22010222020121), we obtain a palindrome (99009999990099).

The spelling of 121020222010220 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty-two million, ten thousand, two hundred twenty".