1000111202121 has 16 divisors (see below), whose sum is σ = 1411942459968. Its totient is φ = 627511526400.

The previous prime is 1000111202117. The next prime is 1000111202141. The reversal of 1000111202121 is 1212021110001.

It is not a de Polignac number, because 1000111202121 - 2² = 1000111202117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000111202097 and 1000111202106.

It is not an unprimeable number, because it can be changed into a prime (1000111202141) 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 15 ways as a sum of consecutive naturals, for example, 5512626 + ... + 5691156.

It is an arithmetic number, because the mean of its divisors is an integer number (88246403748).

Almost surely, 2^{1000111202121} is an apocalyptic number.

It is an amenable number.

1000111202121 is a deficient number, since it is larger than the sum of its proper divisors (411831257847).

1000111202121 is a wasteful number, since it uses less digits than its factorization.

1000111202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288392.

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

Adding to 1000111202121 its reverse (1212021110001), we get a palindrome (2212132312122).

The spelling of 1000111202121 in words is "one trillion, one hundred eleven million, two hundred two thousand, one hundred twenty-one".