121023220223 has 2 divisors, whose sum is σ = 121023220224. Its totient is φ = 121023220222.

The previous prime is 121023220217. The next prime is 121023220247. The reversal of 121023220223 is 322022320121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121023220223 - 2¹⁴ = 121023203839 is a prime.

It is a super-4 number, since 4×121023220223⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121023220195 and 121023220204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121023220823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511610111 + 60511610112.

It is an arithmetic number, because the mean of its divisors is an integer number (60511610112).

Almost surely, 2^121023220223 is an apocalyptic number.

121023220223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023220223 is an equidigital number, since it uses as much as digits as its factorization.

121023220223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 121023220223 its reverse (322022320121), we get a palindrome (443045540344).

The spelling of 121023220223 in words is "one hundred twenty-one billion, twenty-three million, two hundred twenty thousand, two hundred twenty-three".