121020221020 has 24 divisors (see below), whose sum is σ = 265192137504. Its totient is φ = 46303388736.

The previous prime is 121020221017. The next prime is 121020221053. The reversal of 121020221020 is 20122020121.

It is a happy number.

121020221020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131543259 + ... + 131544178.

It is an arithmetic number, because the mean of its divisors is an integer number (11049672396).

Almost surely, 2^121020221020 is an apocalyptic number.

121020221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020221020 is an abundant number, since it is smaller than the sum of its proper divisors (144171916484).

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

121020221020 is a wasteful number, since it uses less digits than its factorization.

121020221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263087469 (or 263087467 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121020221020 its reverse (20122020121), we get a palindrome (141142241141).

The spelling of 121020221020 in words is "one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, twenty".