1210121303223 has 24 divisors (see below), whose sum is σ = 1876983588480. Its totient is φ = 691475505840.

The previous prime is 1210121303221. The next prime is 1210121303243. The reversal of 1210121303223 is 3223031210121.

It is not a de Polignac number, because 1210121303223 - 2¹ = 1210121303221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1210121303223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121303221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5128248 + ... + 5359026.

It is an arithmetic number, because the mean of its divisors is an integer number (78207649520).

Almost surely, 2^{1210121303223} is an apocalyptic number.

1210121303223 is a deficient number, since it is larger than the sum of its proper divisors (666862285257).

1210121303223 is a wasteful number, since it uses less digits than its factorization.

1210121303223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266467 (or 266460 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1210121303223 its reverse (3223031210121), we get a palindrome (4433152513344).

The spelling of 1210121303223 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, three hundred three thousand, two hundred twenty-three".