21122232123101 has 4 divisors (see below), whose sum is σ = 21179785889472. Its totient is φ = 21064678356732.

The previous prime is 21122232123071. The next prime is 21122232123103. The reversal of 21122232123101 is 10132123222112.

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 21122232123101 - 2⁴² = 16724185611997 is a prime.

It is a super-2 number, since 2×21122232123101² (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 (21122232123103) 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, 28776882635 + ... + 28776883368.

It is an arithmetic number, because the mean of its divisors is an integer number (5294946472368).

Almost surely, 2^{21122232123101} is an apocalyptic number.

It is an amenable number.

21122232123101 is a deficient number, since it is larger than the sum of its proper divisors (57553766371).

21122232123101 is an equidigital number, since it uses as much as digits as its factorization.

21122232123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57553766370.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21122232123101 its reverse (10132123222112), we get a palindrome (31254355345213).

It can be divided in two parts, 2112223 and 2123101, that added together give a palindrome (4235324).

The spelling of 21122232123101 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred thirty-two million, one hundred twenty-three thousand, one hundred one".