21022101000002 has 16 divisors (see below), whose sum is σ = 31642153475640. Its totient is φ = 10474766045568.

The previous prime is 21022101000001. The next prime is 21022101000079. The reversal of 21022101000002 is 20000010122012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19220516942641 + 1801584057361 = 4384121^2 + 1342231^2 .

It is not an unprimeable number, because it can be changed into a prime (21022101000001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11534843 + ... + 13232414.

Almost surely, 2^{21022101000002} is an apocalyptic number.

21022101000002 is a deficient number, since it is larger than the sum of its proper divisors (10620052475638).

21022101000002 is a wasteful number, since it uses less digits than its factorization.

21022101000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24768725.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21022101000002 its reverse (20000010122012), we get a palindrome (41022111122014).

The spelling of 21022101000002 in words is "twenty-one trillion, twenty-two billion, one hundred one million, two", and thus it is an aban number.