11021212202111 has 2 divisors, whose sum is σ = 11021212202112. Its totient is φ = 11021212202110.

The previous prime is 11021212202101. The next prime is 11021212202171. The reversal of 11021212202111 is 11120221212011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11021212202111 - 2¹⁴ = 11021212185727 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11021212202111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11021212202101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510606101055 + 5510606101056.

It is an arithmetic number, because the mean of its divisors is an integer number (5510606101056).

Almost surely, 2^{11021212202111} is an apocalyptic number.

11021212202111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021212202111 is an equidigital number, since it uses as much as digits as its factorization.

11021212202111 is an evil number, because the sum of its binary digits is even.

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

Adding to 11021212202111 its reverse (11120221212011), we get a palindrome (22141433414122).

The spelling of 11021212202111 in words is "eleven trillion, twenty-one billion, two hundred twelve million, two hundred two thousand, one hundred eleven".