21122010200101 has 4 divisors (see below), whose sum is σ = 21125050657632. Its totient is φ = 21118969742572.

The previous prime is 21122010199999. The next prime is 21122010200111. The reversal of 21122010200101 is 10100201022112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21122010200101 - 2¹⁹ = 21122009675813 is a prime.

It is a super-2 number, since 2×21122010200101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122010200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520218345 + ... + 1520232238.

It is an arithmetic number, because the mean of its divisors is an integer number (5281262664408).

Almost surely, 2^{21122010200101} is an apocalyptic number.

It is an amenable number.

21122010200101 is a deficient number, since it is larger than the sum of its proper divisors (3040457531).

21122010200101 is an equidigital number, since it uses as much as digits as its factorization.

21122010200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040457530.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21122010200101 its reverse (10100201022112), we get a palindrome (31222211222213).

The spelling of 21122010200101 in words is "twenty-one trillion, one hundred twenty-two billion, ten million, two hundred thousand, one hundred one".