121122100012220 has 48 divisors (see below), whose sum is σ = 265182461802720. Its totient is φ = 46429252536576.

The previous prime is 121122100012219. The next prime is 121122100012271. The reversal of 121122100012220 is 22210001221121.

It is a super-2 number, since 2×121122100012220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1328630375 + ... + 1328721534.

It is an arithmetic number, because the mean of its divisors is an integer number (5524634620890).

Almost surely, 2^{121122100012220} is an apocalyptic number.

121122100012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122100012220 is an abundant number, since it is smaller than the sum of its proper divisors (144060361790500).

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

121122100012220 is a wasteful number, since it uses less digits than its factorization.

121122100012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657352014 (or 2657352012 counting only the distinct ones).

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

Adding to 121122100012220 its reverse (22210001221121), we get a palindrome (143332101233341).

The spelling of 121122100012220 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred million, twelve thousand, two hundred twenty".