21142422401001 has 64 divisors (see below), whose sum is σ = 31476462329856. Its totient is φ = 12515179622400.

The previous prime is 21142422400993. The next prime is 21142422401017. The reversal of 21142422401001 is 10010422424112.

It is a happy number.

It is not a de Polignac number, because 21142422401001 - 2³ = 21142422400993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21142422401021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212464680 + ... + 212564166.

It is an arithmetic number, because the mean of its divisors is an integer number (491819723904).

Almost surely, 2^{21142422401001} is an apocalyptic number.

It is an amenable number.

21142422401001 is a deficient number, since it is larger than the sum of its proper divisors (10334039928855).

21142422401001 is a wasteful number, since it uses less digits than its factorization.

21142422401001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100302.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 21142422401001 its reverse (10010422424112), we get a palindrome (31152844825113).

The spelling of 21142422401001 in words is "twenty-one trillion, one hundred forty-two billion, four hundred twenty-two million, four hundred one thousand, one".