21103113032989 has 32 divisors (see below), whose sum is σ = 24570686000000. Its totient is φ = 17954623067904.

The previous prime is 21103113032977. The next prime is 21103113032993. The reversal of 21103113032989 is 98923031130112.

It is a cyclic number.

It is not a de Polignac number, because 21103113032989 - 2¹⁹ = 21103112508701 is a prime.

It is a super-2 number, since 2×21103113032989² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103113036989) 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, 162143062 + ... + 162273160.

It is an arithmetic number, because the mean of its divisors is an integer number (767833937500).

Almost surely, 2^{21103113032989} is an apocalyptic number.

It is an amenable number.

21103113032989 is a deficient number, since it is larger than the sum of its proper divisors (3467572967011).

21103113032989 is a wasteful number, since it uses less digits than its factorization.

21103113032989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147917.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 21103113032989 in words is "twenty-one trillion, one hundred three billion, one hundred thirteen million, thirty-two thousand, nine hundred eighty-nine".