20120001222011 has 4 divisors (see below), whose sum is σ = 20122929478224. Its totient is φ = 20117072965800.

The previous prime is 20120001221989. The next prime is 20120001222017. The reversal of 20120001222011 is 11022210002102.

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 20120001222011 - 2¹⁰ = 20120001220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120001222017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1464117800 + ... + 1464131541.

It is an arithmetic number, because the mean of its divisors is an integer number (5030732369556).

Almost surely, 2^{20120001222011} is an apocalyptic number.

20120001222011 is a deficient number, since it is larger than the sum of its proper divisors (2928256213).

20120001222011 is an equidigital number, since it uses as much as digits as its factorization.

20120001222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928256212.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20120001222011 its reverse (11022210002102), we get a palindrome (31142211224113).

The spelling of 20120001222011 in words is "twenty trillion, one hundred twenty billion, one million, two hundred twenty-two thousand, eleven".