30012211142 has 4 divisors (see below), whose sum is σ = 45018316716. Its totient is φ = 15006105570.

The previous prime is 30012211139. The next prime is 30012211169. The reversal of 30012211142 is 24111221003.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30012211142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7503052784 + ... + 7503052787.

It is an arithmetic number, because the mean of its divisors is an integer number (11254579179).

Almost surely, 2^30012211142 is an apocalyptic number.

30012211142 is a deficient number, since it is larger than the sum of its proper divisors (15006105574).

30012211142 is a wasteful number, since it uses less digits than its factorization.

30012211142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15006105573.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 30012211142 its reverse (24111221003), we get a palindrome (54123432145).

The spelling of 30012211142 in words is "thirty billion, twelve million, two hundred eleven thousand, one hundred forty-two".