30123001131021 has 24 divisors (see below), whose sum is σ = 45801645009120. Its totient is φ = 19024807995936.

The previous prime is 30123001130987. The next prime is 30123001131109. The reversal of 30123001131021 is 12013110032103.

30123001131021 is a `hidden beast` number, since 30 + 1 + 2 + 300 + 1 + 1 + 310 + 21 = 666.

It is not a de Polignac number, because 30123001131021 - 2¹⁴ = 30123001114637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30123001130985 and 30123001131003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123001135021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12650491 + ... + 14841863.

It is an arithmetic number, because the mean of its divisors is an integer number (1908401875380).

Almost surely, 2^{30123001131021} is an apocalyptic number.

It is an amenable number.

30123001131021 is a deficient number, since it is larger than the sum of its proper divisors (15678643878099).

30123001131021 is a wasteful number, since it uses less digits than its factorization.

30123001131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271785 (or 2271782 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 30123001131021 its reverse (12013110032103), we get a palindrome (42136111163124).

The spelling of 30123001131021 in words is "thirty trillion, one hundred twenty-three billion, one million, one hundred thirty-one thousand, twenty-one".