21022021010001 has 32 divisors (see below), whose sum is σ = 30613544736768. Its totient is φ = 12725599703040.

The previous prime is 21022021009949. The next prime is 21022021010057. The reversal of 21022021010001 is 10001012022012.

It is not a de Polignac number, because 21022021010001 - 2¹³ = 21022021001809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21022021010701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151717585 + ... + 151856081.

It is an arithmetic number, because the mean of its divisors is an integer number (956673273024).

Almost surely, 2^{21022021010001} is an apocalyptic number.

It is an amenable number.

21022021010001 is a deficient number, since it is larger than the sum of its proper divisors (9591523726767).

21022021010001 is a wasteful number, since it uses less digits than its factorization.

21022021010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143901.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21022021010001 its reverse (10001012022012), we get a palindrome (31023033032013).

The spelling of 21022021010001 in words is "twenty-one trillion, twenty-two billion, twenty-one million, ten thousand, one".