30121214040 has 160 divisors (see below), whose sum is σ = 107196281280. Its totient is φ = 7559820288.

The previous prime is 30121214033. The next prime is 30121214063. The reversal of 30121214040 is 4041212103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 218352 + ... + 328511.

It is an arithmetic number, because the mean of its divisors is an integer number (669976758).

Almost surely, 2^30121214040 is an apocalyptic number.

30121214040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30121214040 is an abundant number, since it is smaller than the sum of its proper divisors (77075067240).

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

30121214040 is a wasteful number, since it uses less digits than its factorization.

30121214040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546903 (or 546890 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 30121214040 its reverse (4041212103), we get a palindrome (34162426143).

The spelling of 30121214040 in words is "thirty billion, one hundred twenty-one million, two hundred fourteen thousand, forty".