30123421124021 has 16 divisors (see below), whose sum is σ = 31325747535360. Its totient is φ = 28932021027840.

The previous prime is 30123421124009. The next prime is 30123421124051. The reversal of 30123421124021 is 12042112432103.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 30123421124021 - 2²² = 30123416929717 is a prime.

It is a super-2 number, since 2×30123421124021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123421124051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85923716 + ... + 86273586.

It is an arithmetic number, because the mean of its divisors is an integer number (1957859220960).

Almost surely, 2^{30123421124021} is an apocalyptic number.

It is an amenable number.

30123421124021 is a deficient number, since it is larger than the sum of its proper divisors (1202326411339).

30123421124021 is a wasteful number, since it uses less digits than its factorization.

30123421124021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365476.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 30123421124021 its reverse (12042112432103), we get a palindrome (42165533556124).

The spelling of 30123421124021 in words is "thirty trillion, one hundred twenty-three billion, four hundred twenty-one million, one hundred twenty-four thousand, twenty-one".