21202201112001 has 32 divisors (see below), whose sum is σ = 34849747123968. Its totient is φ = 11165452784640.

The previous prime is 21202201111997. The next prime is 21202201112009. The reversal of 21202201112001 is 10021110220212.

It is not a de Polignac number, because 21202201112001 - 2² = 21202201111997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202201112009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62768140 + ... + 63105021.

It is an arithmetic number, because the mean of its divisors is an integer number (1089054597624).

Almost surely, 2^{21202201112001} is an apocalyptic number.

21202201112001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21202201112001 is a deficient number, since it is larger than the sum of its proper divisors (13647546011967).

21202201112001 is a wasteful number, since it uses less digits than its factorization.

21202201112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125873801.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21202201112001 its reverse (10021110220212), we get a palindrome (31223311332213).

The spelling of 21202201112001 in words is "twenty-one trillion, two hundred two billion, two hundred one million, one hundred twelve thousand, one".