1000212051211 has 4 divisors (see below), whose sum is σ = 1023472796632. Its totient is φ = 976951305792.

The previous prime is 1000212051197. The next prime is 1000212051227. The reversal of 1000212051211 is 1121502120001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000212051211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000212051271) 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, 11630372646 + ... + 11630372731.

It is an arithmetic number, because the mean of its divisors is an integer number (255868199158).

Almost surely, 2^{1000212051211} is an apocalyptic number.

1000212051211 is a deficient number, since it is larger than the sum of its proper divisors (23260745421).

1000212051211 is an equidigital number, since it uses as much as digits as its factorization.

1000212051211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23260745420.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 1000212051211 its reverse (1121502120001), we get a palindrome (2121714171212).

The spelling of 1000212051211 in words is "one trillion, two hundred twelve million, fifty-one thousand, two hundred eleven".