20401041022001 has 4 divisors (see below), whose sum is σ = 20401350950400. Its totient is φ = 20400731093604.

The previous prime is 20401041021989. The next prime is 20401041022007. The reversal of 20401041022001 is 10022014010402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20401041022001 - 2²⁶ = 20400973913137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401041022007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154865441 + ... + 154997118.

It is an arithmetic number, because the mean of its divisors is an integer number (5100337737600).

Almost surely, 2^{20401041022001} is an apocalyptic number.

It is an amenable number.

20401041022001 is a deficient number, since it is larger than the sum of its proper divisors (309928399).

20401041022001 is an equidigital number, since it uses as much as digits as its factorization.

20401041022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309928398.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20401041022001 its reverse (10022014010402), we get a palindrome (30423055032403).

The spelling of 20401041022001 in words is "twenty trillion, four hundred one billion, forty-one million, twenty-two thousand, one".