1000211121101 has 4 divisors (see below), whose sum is σ = 1021492208832. Its totient is φ = 978930033372.

The previous prime is 1000211121097. The next prime is 1000211121103. The reversal of 1000211121101 is 1011211120001.

1000211121101 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 not a de Polignac number, because 1000211121101 - 2² = 1000211121097 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 (1000211121103) 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, 10640543795 + ... + 10640543888.

It is an arithmetic number, because the mean of its divisors is an integer number (255373052208).

Almost surely, 2^{1000211121101} is an apocalyptic number.

It is an amenable number.

1000211121101 is a deficient number, since it is larger than the sum of its proper divisors (21281087731).

1000211121101 is an equidigital number, since it uses as much as digits as its factorization.

1000211121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21281087730.

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

Adding to 1000211121101 its reverse (1011211120001), we get a palindrome (2011422241102).

The spelling of 1000211121101 in words is "one trillion, two hundred eleven million, one hundred twenty-one thousand, one hundred one".