20120221010011 has 4 divisors (see below), whose sum is σ = 20120278857624. Its totient is φ = 20120163162400.

The previous prime is 20120221010003. The next prime is 20120221010027. The reversal of 20120221010011 is 11001012202102.

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 20120221010011 - 2³ = 20120221010003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120221009973 and 20120221010000.

It is not an unprimeable number, because it can be changed into a prime (20120221014011) 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, 28398910 + ... + 29098771.

It is an arithmetic number, because the mean of its divisors is an integer number (5030069714406).

Almost surely, 2^{20120221010011} is an apocalyptic number.

20120221010011 is a deficient number, since it is larger than the sum of its proper divisors (57847613).

20120221010011 is an equidigital number, since it uses as much as digits as its factorization.

20120221010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57847612.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20120221010011 its reverse (11001012202102), we get a palindrome (31121233212113).

The spelling of 20120221010011 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, ten thousand, eleven".