1021155202423 has 8 divisors (see below), whose sum is σ = 1040667835536. Its totient is φ = 1001651664000.

The previous prime is 1021155202373. The next prime is 1021155202451. The reversal of 1021155202423 is 3242025511201.

It is a happy number.

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

It is not a de Polignac number, because 1021155202423 - 2¹³ = 1021155194231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021155202391 and 1021155202400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021155202453) 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, 2046753 + ... + 2496298.

It is an arithmetic number, because the mean of its divisors is an integer number (130083479442).

Almost surely, 2^{1021155202423} is an apocalyptic number.

1021155202423 is a deficient number, since it is larger than the sum of its proper divisors (19512633113).

1021155202423 is an equidigital number, since it uses as much as digits as its factorization.

1021155202423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4547345.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 1021155202423 in words is "one trillion, twenty-one billion, one hundred fifty-five million, two hundred two thousand, four hundred twenty-three".