1021100001211 has 2 divisors, whose sum is σ = 1021100001212. Its totient is φ = 1021100001210.

The previous prime is 1021100001139. The next prime is 1021100001277. The reversal of 1021100001211 is 1121000011201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021100001211 - 2⁹ = 1021100000699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021100001011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510550000605 + 510550000606.

It is an arithmetic number, because the mean of its divisors is an integer number (510550000606).

Almost surely, 2^{1021100001211} is an apocalyptic number.

1021100001211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021100001211 is an equidigital number, since it uses as much as digits as its factorization.

1021100001211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1021100001211 its reverse (1121000011201), we get a palindrome (2142100012412).

The spelling of 1021100001211 in words is "one trillion, twenty-one billion, one hundred million, one thousand, two hundred eleven".