172202011 has 2 divisors, whose sum is σ = 172202012. Its totient is φ = 172202010.

The previous prime is 172201979. The next prime is 172202039. The reversal of 172202011 is 110202271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172202011 - 2⁵ = 172201979 is a prime.

It is not a weakly prime, because it can be changed into another prime (172202411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86101005 + 86101006.

It is an arithmetic number, because the mean of its divisors is an integer number (86101006).

Almost surely, 2^172202011 is an apocalyptic number.

172202011 is a deficient number, since it is larger than the sum of its proper divisors (1).

172202011 is an equidigital number, since it uses as much as digits as its factorization.

172202011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 172202011 is about 13122.5763857560. The cubic root of 172202011 is about 556.3474130452.

Adding to 172202011 its reverse (110202271), we get a palindrome (282404282).

The spelling of 172202011 in words is "one hundred seventy-two million, two hundred two thousand, eleven".