21111530354 has 16 divisors (see below), whose sum is σ = 31994352000. Its totient is φ = 10446938544.

The previous prime is 21111530261. The next prime is 21111530383. The reversal of 21111530354 is 45303511112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174872 + ... + 269820.

It is an arithmetic number, because the mean of its divisors is an integer number (1999647000).

Almost surely, 2^21111530354 is an apocalyptic number.

21111530354 is a deficient number, since it is larger than the sum of its proper divisors (10882821646).

21111530354 is a wasteful number, since it uses less digits than its factorization.

21111530354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96097.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 21111530354 in words is "twenty-one billion, one hundred eleven million, five hundred thirty thousand, three hundred fifty-four".