30313031212121 has 16 divisors (see below), whose sum is σ = 35838257078400. Its totient is φ = 25086513086208.

The previous prime is 30313031212069. The next prime is 30313031212171. The reversal of 30313031212121 is 12121213031303.

It is not a de Polignac number, because 30313031212121 - 2¹⁴ = 30313031195737 is a prime.

It is a super-2 number, since 2×30313031212121² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30313031212171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61784945 + ... + 62273633.

It is an arithmetic number, because the mean of its divisors is an integer number (2239891067400).

Almost surely, 2^{30313031212121} is an apocalyptic number.

It is an amenable number.

30313031212121 is a deficient number, since it is larger than the sum of its proper divisors (5525225866279).

30313031212121 is a wasteful number, since it uses less digits than its factorization.

30313031212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794288.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 30313031212121 its reverse (12121213031303), we get a palindrome (42434244243424).

It can be divided in two parts, 3031303 and 1212121, that added together give a palindrome (4243424).

The spelling of 30313031212121 in words is "thirty trillion, three hundred thirteen billion, thirty-one million, two hundred twelve thousand, one hundred twenty-one".