30121013111 has 8 divisors (see below), whose sum is σ = 35224573824. Its totient is φ = 25217592120.

The previous prime is 30121013107. The next prime is 30121013119. The reversal of 30121013111 is 11131012103.

It is a happy number.

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

It is not a de Polignac number, because 30121013111 - 2² = 30121013107 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 (30121013119) 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, 50034605 + ... + 50035206.

It is an arithmetic number, because the mean of its divisors is an integer number (4403071728).

Almost surely, 2^30121013111 is an apocalyptic number.

30121013111 is a deficient number, since it is larger than the sum of its proper divisors (5103560713).

30121013111 is a wasteful number, since it uses less digits than its factorization.

30121013111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100069861.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 30121013111 its reverse (11131012103), we get a palindrome (41252025214).

The spelling of 30121013111 in words is "thirty billion, one hundred twenty-one million, thirteen thousand, one hundred eleven".