121122001221220 has 48 divisors (see below), whose sum is σ = 265493441783808. Its totient is φ = 46328664032640.

The previous prime is 121122001221167. The next prime is 121122001221337. The reversal of 121122001221220 is 22122100221121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37264779 + ... + 40384498.

It is an arithmetic number, because the mean of its divisors is an integer number (5531113370496).

Almost surely, 2^{121122001221220} is an apocalyptic number.

121122001221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121122001221220 is an abundant number, since it is smaller than the sum of its proper divisors (144371440562588).

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

121122001221220 is a wasteful number, since it uses less digits than its factorization.

121122001221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77652700 (or 77652698 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121122001221220 its reverse (22122100221121), we get a palindrome (143244101442341).

The spelling of 121122001221220 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one million, two hundred twenty-one thousand, two hundred twenty".