1011200121101 has 4 divisors (see below), whose sum is σ = 1011456579552. Its totient is φ = 1010943662652.

The previous prime is 1011200121083. The next prime is 1011200121103. The reversal of 1011200121101 is 1011210021101.

1011200121101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-1011200121101 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 (1011200121103) 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, 128223311 + ... + 128231196.

It is an arithmetic number, because the mean of its divisors is an integer number (252864144888).

Almost surely, 2^{1011200121101} is an apocalyptic number.

It is an amenable number.

1011200121101 is a deficient number, since it is larger than the sum of its proper divisors (256458451).

1011200121101 is an equidigital number, since it uses as much as digits as its factorization.

1011200121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256458450.

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

Adding to 1011200121101 its reverse (1011210021101), we get a palindrome (2022410142202).

The spelling of 1011200121101 in words is "one trillion, eleven billion, two hundred million, one hundred twenty-one thousand, one hundred one".