1000001012211 has 12 divisors (see below), whose sum is σ = 1444514570200. Its totient is φ = 666635650560.

The previous prime is 1000001012189. The next prime is 1000001012233. The reversal of 1000001012211 is 1122101000001.

It is a happy number.

1000001012211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1000001012189) and next prime (1000001012233).

It is not a de Polignac number, because 1000001012211 - 2²¹ = 999998915059 is a prime.

It is a super-2 number, since 2×1000001012211² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000001012193 and 1000001012202.

It is not an unprimeable number, because it can be changed into a prime (1000001012011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2440261 + ... + 2820438.

Almost surely, 2^{1000001012211} is an apocalyptic number.

1000001012211 is a deficient number, since it is larger than the sum of its proper divisors (444513557989).

1000001012211 is a wasteful number, since it uses less digits than its factorization.

1000001012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281826 (or 5281823 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1000001012211 its reverse (1122101000001), we get a palindrome (2122102012212).

The spelling of 1000001012211 in words is "one trillion, one million, twelve thousand, two hundred eleven".