121122202021223 has 4 divisors (see below), whose sum is σ = 130439294484408. Its totient is φ = 111805109558040.

The previous prime is 121122202021201. The next prime is 121122202021229. The reversal of 121122202021223 is 322120202221121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121122202021223 - 2¹⁶ = 121122201955687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122202021229) 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, 4658546231573 + ... + 4658546231598.

It is an arithmetic number, because the mean of its divisors is an integer number (32609823621102).

Almost surely, 2^{121122202021223} is an apocalyptic number.

121122202021223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121122202021223 is a deficient number, since it is larger than the sum of its proper divisors (9317092463185).

121122202021223 is an equidigital number, since it uses as much as digits as its factorization.

121122202021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9317092463184.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 121122202021223 its reverse (322120202221121), we get a palindrome (443242404242344).

The spelling of 121122202021223 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred two million, twenty-one thousand, two hundred twenty-three".