20021230321311 has 8 divisors (see below), whose sum is σ = 27615490098480. Its totient is φ = 12887228712512.

The previous prime is 20021230321303. The next prime is 20021230321327. The reversal of 20021230321311 is 11312303212002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021230321311 - 2³ = 20021230321303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021230321331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115064541990 + ... + 115064542163.

It is an arithmetic number, because the mean of its divisors is an integer number (3451936262310).

Almost surely, 2^{20021230321311} is an apocalyptic number.

20021230321311 is a deficient number, since it is larger than the sum of its proper divisors (7594259777169).

20021230321311 is a wasteful number, since it uses less digits than its factorization.

20021230321311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230129084185.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20021230321311 its reverse (11312303212002), we get a palindrome (31333533533313).

The spelling of 20021230321311 in words is "twenty trillion, twenty-one billion, two hundred thirty million, three hundred twenty-one thousand, three hundred eleven".