101123400000021 has 32 divisors (see below), whose sum is σ = 159067383545856. Its totient is φ = 55919421360000.

The previous prime is 101123400000019. The next prime is 101123400000031. The reversal of 101123400000021 is 120000004321101.

It is not a de Polignac number, because 101123400000021 - 2¹ = 101123400000019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101123400000001) 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 31 ways as a sum of consecutive naturals, for example, 25354416 + ... + 29070486.

It is an arithmetic number, because the mean of its divisors is an integer number (4970855735808).

Almost surely, 2^{101123400000021} is an apocalyptic number.

It is an amenable number.

101123400000021 is a deficient number, since it is larger than the sum of its proper divisors (57943983545835).

101123400000021 is a wasteful number, since it uses less digits than its factorization.

101123400000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757913.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 101123400000021 its reverse (120000004321101), we get a palindrome (221123404321122).

The spelling of 101123400000021 in words is "one hundred one trillion, one hundred twenty-three billion, four hundred million, twenty-one", and thus it is an aban number.