121010221222220 has 48 divisors (see below), whose sum is σ = 280732573094400. Its totient is φ = 43446707728320.

The previous prime is 121010221222201. The next prime is 121010221222229. The reversal of 121010221222220 is 22222122010121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121010221222192 and 121010221222201.

It is not an unprimeable number, because it can be changed into a prime (121010221222229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3481289330 + ... + 3481324089.

It is an arithmetic number, because the mean of its divisors is an integer number (5848595272800).

Almost surely, 2^{121010221222220} is an apocalyptic number.

121010221222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121010221222220 is an abundant number, since it is smaller than the sum of its proper divisors (159722351872180).

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

121010221222220 is a wasteful number, since it uses less digits than its factorization.

121010221222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6962613518 (or 6962613516 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121010221222220 its reverse (22222122010121), we get a palindrome (143232343232341).

The spelling of 121010221222220 in words is "one hundred twenty-one trillion, ten billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty".