1001120121101 has 4 divisors (see below), whose sum is σ = 1044647082912. Its totient is φ = 957593159292.

The previous prime is 1001120121097. The next prime is 1001120121119. The reversal of 1001120121101 is 1011210211001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1001120121101 - 2² = 1001120121097 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 (1001120121151) 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, 21763480871 + ... + 21763480916.

It is an arithmetic number, because the mean of its divisors is an integer number (261161770728).

Almost surely, 2^{1001120121101} is an apocalyptic number.

It is an amenable number.

1001120121101 is a deficient number, since it is larger than the sum of its proper divisors (43526961811).

1001120121101 is an equidigital number, since it uses as much as digits as its factorization.

1001120121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43526961810.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1001120121101 its reverse (1011210211001), we get a palindrome (2012330332102).

The spelling of 1001120121101 in words is "one trillion, one billion, one hundred twenty million, one hundred twenty-one thousand, one hundred one".