20021213332311 has 16 divisors (see below), whose sum is σ = 26964980681184. Its totient is φ = 13212757182464.

The previous prime is 20021213332303. The next prime is 20021213332369. The reversal of 20021213332311 is 11323331212002.

It is a cyclic number.

It is not a de Polignac number, because 20021213332311 - 2³ = 20021213332303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021213332111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36781026 + ... + 37321391.

It is an arithmetic number, because the mean of its divisors is an integer number (1685311292574).

Almost surely, 2^{20021213332311} is an apocalyptic number.

20021213332311 is a deficient number, since it is larger than the sum of its proper divisors (6943767348873).

20021213332311 is a wasteful number, since it uses less digits than its factorization.

20021213332311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74103330.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20021213332311 its reverse (11323331212002), we get a palindrome (31344544544313).

The spelling of 20021213332311 in words is "twenty trillion, twenty-one billion, two hundred thirteen million, three hundred thirty-two thousand, three hundred eleven".