20331220101331 has 8 divisors (see below), whose sum is σ = 20511448521984. Its totient is φ = 20151760246080.

The previous prime is 20331220101287. The next prime is 20331220101341. The reversal of 20331220101331 is 13310102213302.

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 20331220101331 - 2¹⁵ = 20331220068563 is a prime.

It is a super-2 number, since 2×20331220101331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331220101341) 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, 192088210 + ... + 192194023.

It is an arithmetic number, because the mean of its divisors is an integer number (2563931065248).

Almost surely, 2^{20331220101331} is an apocalyptic number.

20331220101331 is a deficient number, since it is larger than the sum of its proper divisors (180228420653).

20331220101331 is a wasteful number, since it uses less digits than its factorization.

20331220101331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384282701.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20331220101331 its reverse (13310102213302), we get a palindrome (33641322314633).

The spelling of 20331220101331 in words is "twenty trillion, three hundred thirty-one billion, two hundred twenty million, one hundred one thousand, three hundred thirty-one".