21174441002 has 32 divisors (see below), whose sum is σ = 38601118080. Its totient is φ = 8578019520.

The previous prime is 21174440977. The next prime is 21174441017. The reversal of 21174441002 is 20014447112.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1268198 + ... + 1284785.

It is an arithmetic number, because the mean of its divisors is an integer number (1206284940).

Almost surely, 2^21174441002 is an apocalyptic number.

21174441002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21174441002 is a deficient number, since it is larger than the sum of its proper divisors (17426677078).

21174441002 is a wasteful number, since it uses less digits than its factorization.

21174441002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553038.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 21174441002 its reverse (20014447112), we get a palindrome (41188888114).

The spelling of 21174441002 in words is "twenty-one billion, one hundred seventy-four million, four hundred forty-one thousand, two".