33121230030 has 72 divisors (see below), whose sum is σ = 100174835592. Its totient is φ = 7570565856.

The previous prime is 33121230029. The next prime is 33121230047. The reversal of 33121230030 is 3003212133.

33121230030 is a `hidden beast` number, since 331 + 2 + 1 + 2 + 300 + 30 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 33121229985 and 33121230012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3750832 + ... + 3759651.

It is an arithmetic number, because the mean of its divisors is an integer number (1391317161).

Almost surely, 2^33121230030 is an apocalyptic number.

33121230030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33121230030 is an abundant number, since it is smaller than the sum of its proper divisors (67053605562).

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

33121230030 is a wasteful number, since it uses less digits than its factorization.

33121230030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510510 (or 7510500 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 33121230030 its reverse (3003212133), we get a palindrome (36124442163).

The spelling of 33121230030 in words is "thirty-three billion, one hundred twenty-one million, two hundred thirty thousand, thirty".