21122103000101 has 4 divisors (see below), whose sum is σ = 21122147703852. Its totient is φ = 21122058296352.

The previous prime is 21122103000067. The next prime is 21122103000107. The reversal of 21122103000101 is 10100030122112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13971821652100 + 7150281348001 = 3737890^2 + 2674001^2 .

It is a cyclic number.

It is not a de Polignac number, because 21122103000101 - 2¹⁰ = 21122102999077 is a prime.

It is a super-2 number, since 2×21122103000101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122103000107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21635486 + ... + 22590671.

It is an arithmetic number, because the mean of its divisors is an integer number (5280536925963).

Almost surely, 2^{21122103000101} is an apocalyptic number.

It is an amenable number.

21122103000101 is a deficient number, since it is larger than the sum of its proper divisors (44703751).

21122103000101 is an equidigital number, since it uses as much as digits as its factorization.

21122103000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44703750.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21122103000101 its reverse (10100030122112), we get a palindrome (31222133122213).

The spelling of 21122103000101 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred three million, one hundred one", and thus it is an aban number.