30013211202121 has 6 divisors (see below), whose sum is σ = 34913327316810. Its totient is φ = 25725609601776.

The previous prime is 30013211202119. The next prime is 30013211202137. The reversal of 30013211202121 is 12120211231003.

It can be written as a sum of positive squares in only one way, i.e., 27803885697721 + 2209325504400 = 5272939^2 + 1486380^2 .

It is not a de Polignac number, because 30013211202121 - 2¹ = 30013211202119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30013211202421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306257257116 + ... + 306257257213.

It is an arithmetic number, because the mean of its divisors is an integer number (5818887886135).

Almost surely, 2^{30013211202121} is an apocalyptic number.

It is an amenable number.

30013211202121 is a deficient number, since it is larger than the sum of its proper divisors (4900116114689).

30013211202121 is an equidigital number, since it uses as much as digits as its factorization.

30013211202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612514514343 (or 612514514336 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 30013211202121 its reverse (12120211231003), we get a palindrome (42133422433124).

The spelling of 30013211202121 in words is "thirty trillion, thirteen billion, two hundred eleven million, two hundred two thousand, one hundred twenty-one".