1021110001223 has 4 divisors (see below), whose sum is σ = 1099656924408. Its totient is φ = 942563078040.

The previous prime is 1021110001199. The next prime is 1021110001231. The reversal of 1021110001223 is 3221000111201.

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 1021110001223 - 2³⁶ = 952390524487 is a prime.

It is a super-2 number, since 2×1021110001223² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021110001198 and 1021110001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021110001273) 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, 39273461573 + ... + 39273461598.

It is an arithmetic number, because the mean of its divisors is an integer number (274914231102).

Almost surely, 2^{1021110001223} is an apocalyptic number.

1021110001223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1021110001223 is a deficient number, since it is larger than the sum of its proper divisors (78546923185).

1021110001223 is an equidigital number, since it uses as much as digits as its factorization.

1021110001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78546923184.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1021110001223 its reverse (3221000111201), we get a palindrome (4242110112424).

The spelling of 1021110001223 in words is "one trillion, twenty-one billion, one hundred ten million, one thousand, two hundred twenty-three".