23121222202 has 8 divisors (see below), whose sum is σ = 37349666676. Its totient is φ = 10671333312.

The previous prime is 23121222199. The next prime is 23121222211. The reversal of 23121222202 is 20222212132.

It can be written as a sum of positive squares in 2 ways, for example, as 21488334921 + 1632887281 = 146589^2 + 40409^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23121222202² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23121222202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444638863 + ... + 444638914.

Almost surely, 2^23121222202 is an apocalyptic number.

23121222202 is a deficient number, since it is larger than the sum of its proper divisors (14228444474).

23121222202 is a wasteful number, since it uses less digits than its factorization.

23121222202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889277792.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 23121222202 its reverse (20222212132), we get a palindrome (43343434334).

The spelling of 23121222202 in words is "twenty-three billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred two".