1000012111 has 8 divisors (see below), whose sum is σ = 1143653504. Its totient is φ = 856566360.

The previous prime is 1000012037. The next prime is 1000012121. The reversal of 1000012111 is 1112100001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000012111 - 2⁷ = 1000011983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 1000012094 and 1000012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000012121) 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, 37785 + ... + 58546.

It is an arithmetic number, because the mean of its divisors is an integer number (142956688).

Almost surely, 2^1000012111 is an apocalyptic number.

1000012111 is a deficient number, since it is larger than the sum of its proper divisors (143641393).

1000012111 is an equidigital number, since it uses as much as digits as its factorization.

1000012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97821.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1000012111 is about 31622.9680928277. The cubic root of 1000012111 is about 1000.0040369837.

Adding to 1000012111 its reverse (1112100001), we get a palindrome (2112112112).

The spelling of 1000012111 in words is "one billion, twelve thousand, one hundred eleven".