1111021100121 has 32 divisors (see below), whose sum is σ = 1503118794240. Its totient is φ = 729851157504.

The previous prime is 1111021100113. The next prime is 1111021100159. The reversal of 1111021100121 is 1210011201111.

It is not a de Polignac number, because 1111021100121 - 2³ = 1111021100113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111021100097 and 1111021100106.

It is not an unprimeable number, because it can be changed into a prime (1111021100921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187574466 + ... + 187580388.

It is an arithmetic number, because the mean of its divisors is an integer number (46972462320).

Almost surely, 2^{1111021100121} is an apocalyptic number.

It is an amenable number.

1111021100121 is a deficient number, since it is larger than the sum of its proper divisors (392097694119).

1111021100121 is a wasteful number, since it uses less digits than its factorization.

1111021100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7845.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1111021100121 its reverse (1210011201111), we get a palindrome (2321032301232).

The spelling of 1111021100121 in words is "one trillion, one hundred eleven billion, twenty-one million, one hundred thousand, one hundred twenty-one".