42112121111003 has 2 divisors, whose sum is σ = 42112121111004. Its totient is φ = 42112121111002.

The previous prime is 42112121110999. The next prime is 42112121111017. The reversal of 42112121111003 is 30011112121124.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42112121111003 - 2² = 42112121110999 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42112121111023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056060555501 + 21056060555502.

It is an arithmetic number, because the mean of its divisors is an integer number (21056060555502).

Almost surely, 2^{42112121111003} is an apocalyptic number.

42112121111003 is a deficient number, since it is larger than the sum of its proper divisors (1).

42112121111003 is an equidigital number, since it uses as much as digits as its factorization.

42112121111003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 42112121111003 its reverse (30011112121124), we get a palindrome (72123233232127).

The spelling of 42112121111003 in words is "forty-two trillion, one hundred twelve billion, one hundred twenty-one million, one hundred eleven thousand, three".