30012203021221 has 32 divisors (see below), whose sum is σ = 31832549261568. Its totient is φ = 28239142440960.

The previous prime is 30012203021179. The next prime is 30012203021233. The reversal of 30012203021221 is 12212030221003.

It is a cyclic number.

It is not a de Polignac number, because 30012203021221 - 2¹⁷ = 30012202890149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012203021621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256901995 + ... + 257018791.

It is an arithmetic number, because the mean of its divisors is an integer number (994767164424).

Almost surely, 2^{30012203021221} is an apocalyptic number.

It is an amenable number.

30012203021221 is a deficient number, since it is larger than the sum of its proper divisors (1820346240347).

30012203021221 is a wasteful number, since it uses less digits than its factorization.

30012203021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117661.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30012203021221 its reverse (12212030221003), we get a palindrome (42224233242224).

The spelling of 30012203021221 in words is "thirty trillion, twelve billion, two hundred three million, twenty-one thousand, two hundred twenty-one".