21103434021092 has 48 divisors (see below), whose sum is σ = 37871853046272. Its totient is φ = 10286011706880.

The previous prime is 21103434021091. The next prime is 21103434021119. The reversal of 21103434021092 is 29012043430112.

It is not an unprimeable number, because it can be changed into a prime (21103434021091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420806363 + ... + 420856509.

It is an arithmetic number, because the mean of its divisors is an integer number (788996938464).

Almost surely, 2^{21103434021092} is an apocalyptic number.

It is an amenable number.

21103434021092 is a deficient number, since it is larger than the sum of its proper divisors (16768419025180).

21103434021092 is a wasteful number, since it uses less digits than its factorization.

21103434021092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65588 (or 65586 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 21103434021092 in words is "twenty-one trillion, one hundred three billion, four hundred thirty-four million, twenty-one thousand, ninety-two".