30002121013 has 4 divisors (see below), whose sum is σ = 31036676940. Its totient is φ = 28967565088.

The previous prime is 30002121011. The next prime is 30002121029. The reversal of 30002121013 is 31012120003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31012120003 = 139 ⋅223108777.

It can be written as a sum of positive squares in 2 ways, for example, as 9525369604 + 20476751409 = 97598^2 + 143097^2 .

It is a cyclic number.

It is not a de Polignac number, because 30002121013 - 2¹ = 30002121011 is a prime.

It is a super-2 number, since 2×30002121013² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30002120984 and 30002121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30002121011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517277920 + ... + 517277977.

It is an arithmetic number, because the mean of its divisors is an integer number (7759169235).

Almost surely, 2^30002121013 is an apocalyptic number.

It is an amenable number.

30002121013 is a deficient number, since it is larger than the sum of its proper divisors (1034555927).

30002121013 is a wasteful number, since it uses less digits than its factorization.

30002121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034555926.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30002121013 its reverse (31012120003), we get a palindrome (61014241016).

The spelling of 30002121013 in words is "thirty billion, two million, one hundred twenty-one thousand, thirteen".