20002221012011 has 4 divisors (see below), whose sum is σ = 22859681156592. Its totient is φ = 17144760867432.

The previous prime is 20002221011989. The next prime is 20002221012029. The reversal of 20002221012011 is 11021012220002.

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 20002221012011 - 2¹⁰ = 20002221010987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20002221012071) 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, 1428730072280 + ... + 1428730072293.

It is an arithmetic number, because the mean of its divisors is an integer number (5714920289148).

Almost surely, 2^{20002221012011} is an apocalyptic number.

20002221012011 is a deficient number, since it is larger than the sum of its proper divisors (2857460144581).

20002221012011 is an equidigital number, since it uses as much as digits as its factorization.

20002221012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857460144580.

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

Adding to 20002221012011 its reverse (11021012220002), we get a palindrome (31023233232013).

The spelling of 20002221012011 in words is "twenty trillion, two billion, two hundred twenty-one million, twelve thousand, eleven".