163231421122020 has 24 divisors (see below), whose sum is σ = 457047979141824. Its totient is φ = 43528378965856.

The previous prime is 163231421122013. The next prime is 163231421122037. The reversal of 163231421122020 is 20221124132361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1360261842624 + ... + 1360261842743.

It is an arithmetic number, because the mean of its divisors is an integer number (19043665797576).

Almost surely, 2^{163231421122020} is an apocalyptic number.

163231421122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163231421122020 is an abundant number, since it is smaller than the sum of its proper divisors (293816558019804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163231421122020 is a wasteful number, since it uses less digits than its factorization.

163231421122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720523685379 (or 2720523685377 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 163231421122020 its reverse (20221124132361), we get a palindrome (183452545254381).

The spelling of 163231421122020 in words is "one hundred sixty-three trillion, two hundred thirty-one billion, four hundred twenty-one million, one hundred twenty-two thousand, twenty".