20331212221395 has 48 divisors (see below), whose sum is σ = 35298847114752. Its totient is φ = 10825457207040.

The previous prime is 20331212221393. The next prime is 20331212221423. The reversal of 20331212221395 is 59312221213302.

20331212221395 is a `hidden beast` number, since 2 + 0 + 3 + 31 + 2 + 12 + 221 + 395 = 666.

It is not a de Polignac number, because 20331212221395 - 2¹ = 20331212221393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331212221393) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67401129 + ... + 67702101.

It is an arithmetic number, because the mean of its divisors is an integer number (735392648224).

Almost surely, 2^{20331212221395} is an apocalyptic number.

20331212221395 is a deficient number, since it is larger than the sum of its proper divisors (14967634893357).

20331212221395 is a wasteful number, since it uses less digits than its factorization.

20331212221395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303452 (or 303449 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 20331212221395 its reverse (59312221213302), we get a palindrome (79643433434697).

The spelling of 20331212221395 in words is "twenty trillion, three hundred thirty-one billion, two hundred twelve million, two hundred twenty-one thousand, three hundred ninety-five".