1100121020101 has 4 divisors (see below), whose sum is σ = 1100124665100. Its totient is φ = 1100117375104.

The previous prime is 1100121020069. The next prime is 1100121020129. The reversal of 1100121020101 is 1010201210011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1093333731876 + 6787288225 = 1045626^2 + 82385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100121020101 - 2⁵ = 1100121020069 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 (1100121020161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324396 + ... + 1988533.

It is an arithmetic number, because the mean of its divisors is an integer number (275031166275).

Almost surely, 2^{1100121020101} is an apocalyptic number.

It is an amenable number.

1100121020101 is a deficient number, since it is larger than the sum of its proper divisors (3644999).

1100121020101 is an equidigital number, since it uses as much as digits as its factorization.

1100121020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644998.

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

Adding to 1100121020101 its reverse (1010201210011), we get a palindrome (2110322230112).

The spelling of 1100121020101 in words is "one trillion, one hundred billion, one hundred twenty-one million, twenty thousand, one hundred one".