20020212212111 has 2 divisors, whose sum is σ = 20020212212112. Its totient is φ = 20020212212110.

The previous prime is 20020212212087. The next prime is 20020212212137. The reversal of 20020212212111 is 11121221202002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020212212111 - 2¹⁸ = 20020211949967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020212212111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020212214111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010106106055 + 10010106106056.

It is an arithmetic number, because the mean of its divisors is an integer number (10010106106056).

Almost surely, 2^{20020212212111} is an apocalyptic number.

20020212212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020212212111 is an equidigital number, since it uses as much as digits as its factorization.

20020212212111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20020212212111 its reverse (11121221202002), we get a palindrome (31141433414113).

The spelling of 20020212212111 in words is "twenty trillion, twenty billion, two hundred twelve million, two hundred twelve thousand, one hundred eleven".