30111121000 has 32 divisors (see below), whose sum is σ = 70460025480. Its totient is φ = 12044448000.

The previous prime is 30111120989. The next prime is 30111121009. The reversal of 30111121000 is 12111103.

It can be written as a sum of positive squares in 4 ways, for example, as 12824656516 + 17286464484 = 113246^2 + 131478^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (30111121009) 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, 15054561 + ... + 15056560.

Almost surely, 2^30111121000 is an apocalyptic number.

It is an amenable number.

30111121000 is an abundant number, since it is smaller than the sum of its proper divisors (40348904480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30111121000 is a wasteful number, since it uses less digits than its factorization.

30111121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30111142 (or 30111128 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 30111121000 its reverse (12111103), we get a palindrome (30123232103).

The spelling of 30111121000 in words is "thirty billion, one hundred eleven million, one hundred twenty-one thousand".