121001101220 has 24 divisors (see below), whose sum is σ = 254211048000. Its totient is φ = 48379728992.

The previous prime is 121001101217. The next prime is 121001101259. The reversal of 121001101220 is 22101100121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246520 + ... + 1340079.

It is an arithmetic number, because the mean of its divisors is an integer number (10592127000).

Almost surely, 2^121001101220 is an apocalyptic number.

121001101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001101220 is an abundant number, since it is smaller than the sum of its proper divisors (133209946780).

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

121001101220 is a wasteful number, since it uses less digits than its factorization.

121001101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588947 (or 2588945 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121001101220 its reverse (22101100121), we get a palindrome (143102201341).

The spelling of 121001101220 in words is "one hundred twenty-one billion, one million, one hundred one thousand, two hundred twenty".