121020032221 has 8 divisors (see below), whose sum is σ = 132258883104. Its totient is φ = 109820686320.

The previous prime is 121020032209. The next prime is 121020032261. The reversal of 121020032221 is 122230020121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020032221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121020032195 and 121020032204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020032261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9869835 + ... + 9882088.

It is an arithmetic number, because the mean of its divisors is an integer number (16532360388).

Almost surely, 2^121020032221 is an apocalyptic number.

121020032221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121020032221 is a deficient number, since it is larger than the sum of its proper divisors (11238850883).

121020032221 is a wasteful number, since it uses less digits than its factorization.

121020032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19752491.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 121020032221 its reverse (122230020121), we get a palindrome (243250052342).

It can be divided in two parts, 1210200 and 32221, that added together give a palindrome (1242421).

The spelling of 121020032221 in words is "one hundred twenty-one billion, twenty million, thirty-two thousand, two hundred twenty-one".