21022201012001 has 6 divisors (see below), whose sum is σ = 24454397095650. Its totient is φ = 18019029438816.

The previous prime is 21022201011991. The next prime is 21022201012013. The reversal of 21022201012001 is 10021010222012.

It can be written as a sum of positive squares in only one way, i.e., 20984690619025 + 37510392976 = 4580905^2 + 193676^2 .

It is not a de Polignac number, because 21022201012001 - 2⁶ = 21022201011937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022201012031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214512255176 + ... + 214512255273.

It is an arithmetic number, because the mean of its divisors is an integer number (4075732849275).

Almost surely, 2^{21022201012001} is an apocalyptic number.

It is an amenable number.

21022201012001 is a deficient number, since it is larger than the sum of its proper divisors (3432196083649).

21022201012001 is an equidigital number, since it uses as much as digits as its factorization.

21022201012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429024510463 (or 429024510456 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21022201012001 its reverse (10021010222012), we get a palindrome (31043211234013).

The spelling of 21022201012001 in words is "twenty-one trillion, twenty-two billion, two hundred one million, twelve thousand, one".