1000012122111 has 4 divisors (see below), whose sum is σ = 1333349496152. Its totient is φ = 666674748072.

The previous prime is 1000012122101. The next prime is 1000012122119. The reversal of 1000012122111 is 1112212100001.

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

It is not a de Polignac number, because 1000012122111 - 2¹⁸ = 1000011859967 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 (1000012122119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166668687016 + ... + 166668687021.

It is an arithmetic number, because the mean of its divisors is an integer number (333337374038).

Almost surely, 2^{1000012122111} is an apocalyptic number.

1000012122111 is a deficient number, since it is larger than the sum of its proper divisors (333337374041).

1000012122111 is an equidigital number, since it uses as much as digits as its factorization.

1000012122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333337374040.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1000012122111 its reverse (1112212100001), we get a palindrome (2112224222112).

The spelling of 1000012122111 in words is "one trillion, twelve million, one hundred twenty-two thousand, one hundred eleven".