20401122406020 has 24 divisors (see below), whose sum is σ = 57123142737024. Its totient is φ = 5440299308256.

The previous prime is 20401122405959. The next prime is 20401122406073. The reversal of 20401122406020 is 2060422110402.

It is a happy number.

It is a super-2 number, since 2×20401122406020² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170009353324 + ... + 170009353443.

It is an arithmetic number, because the mean of its divisors is an integer number (2380130947376).

Almost surely, 2^{20401122406020} is an apocalyptic number.

20401122406020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20401122406020 is an abundant number, since it is smaller than the sum of its proper divisors (36722020331004).

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

20401122406020 is a wasteful number, since it uses less digits than its factorization.

20401122406020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340018706779 (or 340018706777 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20401122406020 its reverse (2060422110402), we get a palindrome (22461544516422).

The spelling of 20401122406020 in words is "twenty trillion, four hundred one billion, one hundred twenty-two million, four hundred six thousand, twenty".