1000122221111 has 8 divisors (see below), whose sum is σ = 1097376487200. Its totient is φ = 905771067552.

The previous prime is 1000122221107. The next prime is 1000122221117. The reversal of 1000122221111 is 1111222210001.

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

It is not a de Polignac number, because 1000122221111 - 2² = 1000122221107 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 (1000122221117) 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, 725777411 + ... + 725778788.

It is an arithmetic number, because the mean of its divisors is an integer number (137172060900).

Almost surely, 2^{1000122221111} is an apocalyptic number.

1000122221111 is a deficient number, since it is larger than the sum of its proper divisors (97254266089).

1000122221111 is a wasteful number, since it uses less digits than its factorization.

1000122221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451556265.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1000122221111 its reverse (1111222210001), we get a palindrome (2111344431112).

The spelling of 1000122221111 in words is "one trillion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".