30102121291 has 8 divisors (see below), whose sum is σ = 32840103168. Its totient is φ = 27364377000.

The previous prime is 30102121277. The next prime is 30102121297. The reversal of 30102121291 is 19212120103.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30102121291 - 2¹³ = 30102113099 is a prime.

It is a super-2 number, since 2×30102121291² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30102121297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300226 + ... + 387736.

It is an arithmetic number, because the mean of its divisors is an integer number (4105012896).

Almost surely, 2^30102121291 is an apocalyptic number.

30102121291 is a deficient number, since it is larger than the sum of its proper divisors (2737981877).

30102121291 is a wasteful number, since it uses less digits than its factorization.

30102121291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118793.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 30102121291 its reverse (19212120103), we get a palindrome (49314241394).

The spelling of 30102121291 in words is "thirty billion, one hundred two million, one hundred twenty-one thousand, two hundred ninety-one".