1000021211101 has 4 divisors (see below), whose sum is σ = 1090932230304. Its totient is φ = 909110191900.

The previous prime is 1000021211083. The next prime is 1000021211149. The reversal of 1000021211101 is 1011121200001.

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 1000021211101 - 2⁷ = 1000021210973 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 (1000021211401) 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, 45455509585 + ... + 45455509606.

It is an arithmetic number, because the mean of its divisors is an integer number (272733057576).

Almost surely, 2^{1000021211101} is an apocalyptic number.

1000021211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000021211101 is a deficient number, since it is larger than the sum of its proper divisors (90911019203).

1000021211101 is an equidigital number, since it uses as much as digits as its factorization.

1000021211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90911019202.

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

Adding to 1000021211101 its reverse (1011121200001), we get a palindrome (2011142411102).

The spelling of 1000021211101 in words is "one trillion, twenty-one million, two hundred eleven thousand, one hundred one".