121210221023 has 8 divisors (see below), whose sum is σ = 127594897920. Its totient is φ = 114826063320.

The previous prime is 121210220959. The next prime is 121210221029. The reversal of 121210221023 is 320122012121.

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 121210221023 - 2⁶ = 121210220959 is a prime.

It is a super-2 number, since 2×121210221023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210220992 and 121210221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210221029) 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, 406208 + ... + 638298.

It is an arithmetic number, because the mean of its divisors is an integer number (15949362240).

Almost surely, 2^121210221023 is an apocalyptic number.

121210221023 is a deficient number, since it is larger than the sum of its proper divisors (6384676897).

121210221023 is a wasteful number, since it uses less digits than its factorization.

121210221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259597.

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

Adding to 121210221023 its reverse (320122012121), we get a palindrome (441332233144).

The spelling of 121210221023 in words is "one hundred twenty-one billion, two hundred ten million, two hundred twenty-one thousand, twenty-three".