123030001021 has 8 divisors (see below), whose sum is σ = 123683986944. Its totient is φ = 122376118080.

The previous prime is 123030001013. The next prime is 123030001037. The reversal of 123030001021 is 120100030321.

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

It is a cyclic number.

It is not a de Polignac number, because 123030001021 - 2³ = 123030001013 is a prime.

It is a super-2 number, since 2×123030001021² (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 = 123030000992 and 123030001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030008021) 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, 4175286 + ... + 4204648.

It is an arithmetic number, because the mean of its divisors is an integer number (15460498368).

Almost surely, 2^123030001021 is an apocalyptic number.

It is an amenable number.

123030001021 is a deficient number, since it is larger than the sum of its proper divisors (653985923).

123030001021 is a wasteful number, since it uses less digits than its factorization.

123030001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51491.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 123030001021 its reverse (120100030321), we get a palindrome (243130031342).

The spelling of 123030001021 in words is "one hundred twenty-three billion, thirty million, one thousand, twenty-one".