20012221122011 has 8 divisors (see below), whose sum is σ = 20294449905600. Its totient is φ = 19730715076800.

The previous prime is 20012221122001. The next prime is 20012221122017. The reversal of 20012221122011 is 11022112221002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012221122011 - 2⁴² = 15614174610907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012221122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180628826 + ... + 180739583.

It is an arithmetic number, because the mean of its divisors is an integer number (2536806238200).

Almost surely, 2^{20012221122011} is an apocalyptic number.

20012221122011 is a deficient number, since it is larger than the sum of its proper divisors (282228783589).

20012221122011 is an equidigital number, since it uses as much as digits as its factorization.

20012221122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361369189.

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

Adding to 20012221122011 its reverse (11022112221002), we get a palindrome (31034333343013).

The spelling of 20012221122011 in words is "twenty trillion, twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, eleven".