1000211212111 has 4 divisors (see below), whose sum is σ = 1002489598000. Its totient is φ = 997932826224.

The previous prime is 1000211212081. The next prime is 1000211212127. The reversal of 1000211212111 is 1112121120001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000211212111 - 2⁹ = 1000211211599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000211212091 and 1000211212100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000211216111) 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, 1139192286 + ... + 1139193163.

It is an arithmetic number, because the mean of its divisors is an integer number (250622399500).

Almost surely, 2^{1000211212111} is an apocalyptic number.

1000211212111 is a deficient number, since it is larger than the sum of its proper divisors (2278385889).

1000211212111 is an equidigital number, since it uses as much as digits as its factorization.

1000211212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278385888.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1000211212111 its reverse (1112121120001), we get a palindrome (2112332332112).

The spelling of 1000211212111 in words is "one trillion, two hundred eleven million, two hundred twelve thousand, one hundred eleven".