30123121332 has 12 divisors (see below), whose sum is σ = 70287283136. Its totient is φ = 10041040440.

The previous prime is 30123121319. The next prime is 30123121339. The reversal of 30123121332 is 23312132103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 30123121299 and 30123121308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123121339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1255130044 + ... + 1255130067.

Almost surely, 2^30123121332 is an apocalyptic number.

It is an amenable number.

30123121332 is an abundant number, since it is smaller than the sum of its proper divisors (40164161804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30123121332 is a wasteful number, since it uses less digits than its factorization.

30123121332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510260118 (or 2510260116 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30123121332 its reverse (23312132103), we get a palindrome (53435253435).

The spelling of 30123121332 in words is "thirty billion, one hundred twenty-three million, one hundred twenty-one thousand, three hundred thirty-two".