1202121223 has 4 divisors (see below), whose sum is σ = 1204205200. Its totient is φ = 1200037248.

The previous prime is 1202121191. The next prime is 1202121257. The reversal of 1202121223 is 3221212021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221212021 = 9677 ⋅332873.

It is a cyclic number.

It is not a de Polignac number, because 1202121223 - 2⁵ = 1202121191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1202121197 and 1202121206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202121023) 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, 1041123 + ... + 1042276.

It is an arithmetic number, because the mean of its divisors is an integer number (301051300).

Almost surely, 2^1202121223 is an apocalyptic number.

1202121223 is a deficient number, since it is larger than the sum of its proper divisors (2083977).

1202121223 is an equidigital number, since it uses as much as digits as its factorization.

1202121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083976.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1202121223 is about 34671.6198496696. The cubic root of 1202121223 is about 1063.2843494325.

Adding to 1202121223 its reverse (3221212021), we get a palindrome (4423333244).

The spelling of 1202121223 in words is "one billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-three".