42012121400111 has 4 divisors (see below), whose sum is σ = 42012176353224. Its totient is φ = 42012066447000.

The previous prime is 42012121400077. The next prime is 42012121400113. The reversal of 42012121400111 is 11100412121024.

42012121400111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 42012121400111 - 2¹⁸ = 42012121137967 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 (42012121400113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26313380 + ... + 27864281.

It is an arithmetic number, because the mean of its divisors is an integer number (10503044088306).

Almost surely, 2^{42012121400111} is an apocalyptic number.

42012121400111 is a deficient number, since it is larger than the sum of its proper divisors (54953113).

42012121400111 is an equidigital number, since it uses as much as digits as its factorization.

42012121400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54953112.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 42012121400111 its reverse (11100412121024), we get a palindrome (53112533521135).

The spelling of 42012121400111 in words is "forty-two trillion, twelve billion, one hundred twenty-one million, four hundred thousand, one hundred eleven".