20012212011211 has 16 divisors (see below), whose sum is σ = 22955581440000. Its totient is φ = 17090079032448.

The previous prime is 20012212011167. The next prime is 20012212011217. The reversal of 20012212011211 is 11211021221002.

It is a cyclic number.

It is not a de Polignac number, because 20012212011211 - 2⁷ = 20012212011083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012212011217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2759371 + ... + 6902068.

It is an arithmetic number, because the mean of its divisors is an integer number (1434723840000).

Almost surely, 2^{20012212011211} is an apocalyptic number.

20012212011211 is a deficient number, since it is larger than the sum of its proper divisors (2943369428789).

20012212011211 is an equidigital number, since it uses as much as digits as its factorization.

20012212011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9662538.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20012212011211 its reverse (11211021221002), we get a palindrome (31223233232213).

The spelling of 20012212011211 in words is "twenty trillion, twelve billion, two hundred twelve million, eleven thousand, two hundred eleven".