121010112221 has 8 divisors (see below), whose sum is σ = 126280898304. Its totient is φ = 115740115920.

The previous prime is 121010112211. The next prime is 121010112229. The reversal of 121010112221 is 122211010121.

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

It is a cyclic number.

It is not a de Polignac number, because 121010112221 - 2¹⁰ = 121010111197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010112196 and 121010112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010112229) 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, 127031 + ... + 508091.

It is an arithmetic number, because the mean of its divisors is an integer number (15785112288).

Almost surely, 2^121010112221 is an apocalyptic number.

It is an amenable number.

121010112221 is a deficient number, since it is larger than the sum of its proper divisors (5270786083).

121010112221 is a wasteful number, since it uses less digits than its factorization.

121010112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394891.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121010112221 its reverse (122211010121), we get a palindrome (243221122342).

The spelling of 121010112221 in words is "one hundred twenty-one billion, ten million, one hundred twelve thousand, two hundred twenty-one".