1000121223223 has 8 divisors (see below), whose sum is σ = 1053461520000. Its totient is φ = 946851160248.

The previous prime is 1000121223221. The next prime is 1000121223239. The reversal of 1000121223223 is 3223221210001.

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

It is not a de Polignac number, because 1000121223223 - 2¹ = 1000121223221 is a prime.

It is a super-2 number, since 2×1000121223223² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000121223223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000121223221) 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, 17529211 + ... + 17586172.

It is an arithmetic number, because the mean of its divisors is an integer number (131682690000).

Almost surely, 2^{1000121223223} is an apocalyptic number.

1000121223223 is a deficient number, since it is larger than the sum of its proper divisors (53340296777).

1000121223223 is a wasteful number, since it uses less digits than its factorization.

1000121223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35116901.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 1000121223223 its reverse (3223221210001), we get a palindrome (4223342433224).

The spelling of 1000121223223 in words is "one trillion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred twenty-three".