30321213212120 has 64 divisors (see below), whose sum is σ = 70620803640000. Its totient is φ = 11702701075968.

The previous prime is 30321213212099. The next prime is 30321213212203. The reversal of 30321213212120 is 2121231212303.

It is a super-2 number, since 2×30321213212120² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6640532 + ... + 10234211.

It is an arithmetic number, because the mean of its divisors is an integer number (1103450056875).

Almost surely, 2^{30321213212120} is an apocalyptic number.

It is an amenable number.

30321213212120 is an abundant number, since it is smaller than the sum of its proper divisors (40299590427880).

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

30321213212120 is a wasteful number, since it uses less digits than its factorization.

30321213212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16876332 (or 16876328 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 30321213212120 its reverse (2121231212303), we get a palindrome (32442444424423).

The spelling of 30321213212120 in words is "thirty trillion, three hundred twenty-one billion, two hundred thirteen million, two hundred twelve thousand, one hundred twenty".