1010211691 has 2 divisors, whose sum is σ = 1010211692. Its totient is φ = 1010211690.

The previous prime is 1010211679. The next prime is 1010211701. The reversal of 1010211691 is 1961120101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1010211691 - 2⁷ = 1010211563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010211611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505105845 + 505105846.

It is an arithmetic number, because the mean of its divisors is an integer number (505105846).

Almost surely, 2^1010211691 is an apocalyptic number.

1010211691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010211691 is an equidigital number, since it uses as much as digits as its factorization.

1010211691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The square root of 1010211691 is about 31783.8275070829. The cubic root of 1010211691 is about 1003.3923757732.

Adding to 1010211691 its reverse (1961120101), we get a palindrome (2971331792).

The spelling of 1010211691 in words is "one billion, ten million, two hundred eleven thousand, six hundred ninety-one".