21122103110023 has 8 divisors (see below), whose sum is σ = 21133475946800. Its totient is φ = 21110730738048.

The previous prime is 21122103109957. The next prime is 21122103110029. The reversal of 21122103110023 is 32001130122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21122103110023 - 2⁹ = 21122103109511 is a prime.

It is a super-2 number, since 2×21122103110023² (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 (21122103110029) 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, 128924623 + ... + 129088351.

It is an arithmetic number, because the mean of its divisors is an integer number (2641684493350).

Almost surely, 2^{21122103110023} is an apocalyptic number.

21122103110023 is a deficient number, since it is larger than the sum of its proper divisors (11372836777).

21122103110023 is a wasteful number, since it uses less digits than its factorization.

21122103110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232401.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21122103110023 its reverse (32001130122112), we get a palindrome (53123233232135).

The spelling of 21122103110023 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred three million, one hundred ten thousand, twenty-three".