20102211201211 has 4 divisors (see below), whose sum is σ = 20280106875672. Its totient is φ = 19924315526752.

The previous prime is 20102211201209. The next prime is 20102211201239. The reversal of 20102211201211 is 11210211220102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20102211201211 - 2¹ = 20102211201209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102211201911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88947837061 + ... + 88947837286.

It is an arithmetic number, because the mean of its divisors is an integer number (5070026718918).

Almost surely, 2^{20102211201211} is an apocalyptic number.

20102211201211 is a deficient number, since it is larger than the sum of its proper divisors (177895674461).

20102211201211 is a wasteful number, since it uses less digits than its factorization.

20102211201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177895674460.

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

Adding to 20102211201211 its reverse (11210211220102), we get a palindrome (31312422421313).

The spelling of 20102211201211 in words is "twenty trillion, one hundred two billion, two hundred eleven million, two hundred one thousand, two hundred eleven".