20100021310223 has 4 divisors (see below), whose sum is σ = 21282375504960. Its totient is φ = 18917667115488.

The previous prime is 20100021310211. The next prime is 20100021310261. The reversal of 20100021310223 is 32201312000102.

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 20100021310223 - 2⁸ = 20100021309967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1182354194719 = 20100021310223 / (2 + 0 + 1 + 0 + 0 + 0 + 2 + 1 + 3 + 1 + 0 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100021300223) 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, 591177097343 + ... + 591177097376.

It is an arithmetic number, because the mean of its divisors is an integer number (5320593876240).

Almost surely, 2^{20100021310223} is an apocalyptic number.

20100021310223 is a deficient number, since it is larger than the sum of its proper divisors (1182354194737).

20100021310223 is a wasteful number, since it uses less digits than its factorization.

20100021310223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182354194736.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20100021310223 its reverse (32201312000102), we get a palindrome (52301333310325).

The spelling of 20100021310223 in words is "twenty trillion, one hundred billion, twenty-one million, three hundred ten thousand, two hundred twenty-three".