121001223020 has 48 divisors (see below), whose sum is σ = 265303019520. Its totient is φ = 46269491136.

The previous prime is 121001222977. The next prime is 121001223059. The reversal of 121001223020 is 20322100121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121001222986 and 121001223004.

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 15 ways as a sum of consecutive naturals, for example, 734369 + ... + 883911.

It is an arithmetic number, because the mean of its divisors is an integer number (5527146240).

Almost surely, 2^121001223020 is an apocalyptic number.

121001223020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001223020 is an abundant number, since it is smaller than the sum of its proper divisors (144301796500).

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

121001223020 is a wasteful number, since it uses less digits than its factorization.

121001223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151334 (or 151332 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 121001223020 its reverse (20322100121), we get a palindrome (141323323141).

The spelling of 121001223020 in words is "one hundred twenty-one billion, one million, two hundred twenty-three thousand, twenty".