1000211120021 has 4 divisors (see below), whose sum is σ = 1000241324544. Its totient is φ = 1000180915500.

The previous prime is 1000211119981. The next prime is 1000211120053. The reversal of 1000211120021 is 1200211120001.

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 1000211120021 - 2¹⁰ = 1000211118997 is a prime.

It is a super-2 number, since 2×1000211120021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000211119984 and 1000211120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000211120521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15052535 + ... + 15118836.

It is an arithmetic number, because the mean of its divisors is an integer number (250060331136).

Almost surely, 2^{1000211120021} is an apocalyptic number.

It is an amenable number.

1000211120021 is a deficient number, since it is larger than the sum of its proper divisors (30204523).

1000211120021 is an equidigital number, since it uses as much as digits as its factorization.

1000211120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30204522.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1000211120021 its reverse (1200211120001), we get a palindrome (2200422240022).

The spelling of 1000211120021 in words is "one trillion, two hundred eleven million, one hundred twenty thousand, twenty-one".