1000111200121 has 16 divisors (see below), whose sum is σ = 1093227077376. Its totient is φ = 907362000000.

The previous prime is 1000111200119. The next prime is 1000111200227. The reversal of 1000111200121 is 1210021110001.

It is a cyclic number.

It is not a de Polignac number, because 1000111200121 - 2¹ = 1000111200119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000111200098 and 1000111200107.

It is not an unprimeable number, because it can be changed into a prime (1000111200721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53555616 + ... + 53574286.

It is an arithmetic number, because the mean of its divisors is an integer number (68326692336).

Almost surely, 2^{1000111200121} is an apocalyptic number.

1000111200121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000111200121 is a deficient number, since it is larger than the sum of its proper divisors (93115877255).

1000111200121 is a wasteful number, since it uses less digits than its factorization.

1000111200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28224.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1000111200121 its reverse (1210021110001), we get a palindrome (2210132310122).

The spelling of 1000111200121 in words is "one trillion, one hundred eleven million, two hundred thousand, one hundred twenty-one".