10202121211211 has 2 divisors, whose sum is σ = 10202121211212. Its totient is φ = 10202121211210.

The previous prime is 10202121211207. The next prime is 10202121211229. The reversal of 10202121211211 is 11211212120201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10202121211211 - 2² = 10202121211207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202121211211.

It is not a weakly prime, because it can be changed into another prime (10202121213211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101060605605 + 5101060605606.

It is an arithmetic number, because the mean of its divisors is an integer number (5101060605606).

Almost surely, 2^{10202121211211} is an apocalyptic number.

10202121211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202121211211 is an equidigital number, since it uses as much as digits as its factorization.

10202121211211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10202121211211 its reverse (11211212120201), we get a palindrome (21413333331412).

The spelling of 10202121211211 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred eleven".