202122011 has 16 divisors (see below), whose sum is σ = 253848000. Its totient is φ = 159917184.

The previous prime is 202122007. The next prime is 202122013. The reversal of 202122011 is 110221202.

It is a happy number.

It is not a de Polignac number, because 202122011 - 2² = 202122007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202121983 and 202122001.

It is not an unprimeable number, because it can be changed into a prime (202122013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18206 + ... + 27123.

It is an arithmetic number, because the mean of its divisors is an integer number (15865500).

Almost surely, 2^202122011 is an apocalyptic number.

202122011 is a deficient number, since it is larger than the sum of its proper divisors (51725989).

202122011 is an equidigital number, since it uses as much as digits as its factorization.

202122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45363 (or 45349 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 202122011 is about 14216.9620875910. The cubic root of 202122011 is about 586.8645415867.

Adding to 202122011 its reverse (110221202), we get a palindrome (312343213).

The spelling of 202122011 in words is "two hundred two million, one hundred twenty-two thousand, eleven".