121221130223 has 8 divisors (see below), whose sum is σ = 130455913680. Its totient is φ = 112220138880.

The previous prime is 121221130211. The next prime is 121221130297. The reversal of 121221130223 is 322031122121.

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

It is not a de Polignac number, because 121221130223 - 2³⁶ = 52501653487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121221130195 and 121221130204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221130423) 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, 58446953 + ... + 58449026.

It is an arithmetic number, because the mean of its divisors is an integer number (16306989210).

Almost surely, 2^121221130223 is an apocalyptic number.

121221130223 is a deficient number, since it is larger than the sum of its proper divisors (9234783457).

121221130223 is a wasteful number, since it uses less digits than its factorization.

121221130223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116896057.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121221130223 its reverse (322031122121), we get a palindrome (443252252344).

The spelling of 121221130223 in words is "one hundred twenty-one billion, two hundred twenty-one million, one hundred thirty thousand, two hundred twenty-three".