121120021223 has 2 divisors, whose sum is σ = 121120021224. Its totient is φ = 121120021222.

The previous prime is 121120021199. The next prime is 121120021241. The reversal of 121120021223 is 322120021121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121120021223 - 2²⁶ = 121052912359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121120021523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560010611 + 60560010612.

It is an arithmetic number, because the mean of its divisors is an integer number (60560010612).

Almost surely, 2^121120021223 is an apocalyptic number.

121120021223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120021223 is an equidigital number, since it uses as much as digits as its factorization.

121120021223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121120021223 its reverse (322120021121), we get a palindrome (443240042344).

The spelling of 121120021223 in words is "one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, two hundred twenty-three".