100021301123 has 4 divisors (see below), whose sum is σ = 100022598048. Its totient is φ = 100020004200.

The previous prime is 100021301071. The next prime is 100021301131. The reversal of 100021301123 is 321103120001.

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 100021301123 - 2²⁰ = 100020252547 is a prime.

It is a super-2 number, since 2×100021301123² (a number of 23 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 = 100021301098 and 100021301107.

It is not an unprimeable number, because it can be changed into a prime (100021301143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524936 + ... + 689637.

It is an arithmetic number, because the mean of its divisors is an integer number (25005649512).

Almost surely, 2^100021301123 is an apocalyptic number.

100021301123 is a deficient number, since it is larger than the sum of its proper divisors (1296925).

100021301123 is an equidigital number, since it uses as much as digits as its factorization.

100021301123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296924.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100021301123 its reverse (321103120001), we get a palindrome (421124421124).

The spelling of 100021301123 in words is "one hundred billion, twenty-one million, three hundred one thousand, one hundred twenty-three".