20021202011211 has 4 divisors (see below), whose sum is σ = 26694936014952. Its totient is φ = 13347468007472.

The previous prime is 20021202011203. The next prime is 20021202011219. The reversal of 20021202011211 is 11211020212002.

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

It is an interprime number because it is at equal distance from previous prime (20021202011203) and next prime (20021202011219).

It is a cyclic number.

It is not a de Polignac number, because 20021202011211 - 2³ = 20021202011203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021202011219) 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, 3336867001866 + ... + 3336867001871.

It is an arithmetic number, because the mean of its divisors is an integer number (6673734003738).

Almost surely, 2^{20021202011211} is an apocalyptic number.

20021202011211 is a deficient number, since it is larger than the sum of its proper divisors (6673734003741).

20021202011211 is an equidigital number, since it uses as much as digits as its factorization.

20021202011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673734003740.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021202011211 its reverse (11211020212002), we get a palindrome (31232222223213).

The spelling of 20021202011211 in words is "twenty trillion, twenty-one billion, two hundred two million, eleven thousand, two hundred eleven".