1000212221111 has 8 divisors (see below), whose sum is σ = 1001503286784. Its totient is φ = 998921299320.

The previous prime is 1000212221039. The next prime is 1000212221137. The reversal of 1000212221111 is 1111222120001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000212221111 - 2²⁶ = 1000145112247 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 (1000212221161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24266426 + ... + 24307608.

It is an arithmetic number, because the mean of its divisors is an integer number (125187910848).

Almost surely, 2^{1000212221111} is an apocalyptic number.

1000212221111 is a deficient number, since it is larger than the sum of its proper divisors (1291065673).

1000212221111 is an equidigital number, since it uses as much as digits as its factorization.

1000212221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71941.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1000212221111 its reverse (1111222120001), we get a palindrome (2111434341112).

The spelling of 1000212221111 in words is "one trillion, two hundred twelve million, two hundred twenty-one thousand, one hundred eleven".