121201011223 has 4 divisors (see below), whose sum is σ = 121261522968. Its totient is φ = 121140499480.

The previous prime is 121201011221. The next prime is 121201011257. The reversal of 121201011223 is 322110102121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322110102121 = 248407 ⋅1296703.

It is a cyclic number.

It is not a de Polignac number, because 121201011223 - 2¹ = 121201011221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121201011197 and 121201011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201011221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30252868 + ... + 30256873.

It is an arithmetic number, because the mean of its divisors is an integer number (30315380742).

Almost surely, 2^121201011223 is an apocalyptic number.

121201011223 is a deficient number, since it is larger than the sum of its proper divisors (60511745).

121201011223 is an equidigital number, since it uses as much as digits as its factorization.

121201011223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60511744.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121201011223 its reverse (322110102121), we get a palindrome (443311113344).

The spelling of 121201011223 in words is "one hundred twenty-one billion, two hundred one million, eleven thousand, two hundred twenty-three".