30131221140121 has 8 divisors (see below), whose sum is σ = 30412885975560. Its totient is φ = 29849651425152.

The previous prime is 30131221140089. The next prime is 30131221140179. The reversal of 30131221140121 is 12104112213103.

It can be written as a sum of positive squares in 4 ways, for example, as 4286808752521 + 25844412387600 = 2070461^2 + 5083740^2 .

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 30131221140121 - 2⁵ = 30131221140089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131221140092 and 30131221140101.

It is not an unprimeable number, because it can be changed into a prime (30131221144121) 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, 23143540 + ... + 24410773.

It is an arithmetic number, because the mean of its divisors is an integer number (3801610746945).

Almost surely, 2^{30131221140121} is an apocalyptic number.

It is an amenable number.

30131221140121 is a deficient number, since it is larger than the sum of its proper divisors (281664835439).

30131221140121 is a wasteful number, since it uses less digits than its factorization.

30131221140121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47560235.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 30131221140121 its reverse (12104112213103), we get a palindrome (42235333353224).

The spelling of 30131221140121 in words is "thirty trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred forty thousand, one hundred twenty-one".