21320444400010 has 64 divisors (see below), whose sum is σ = 43930215952128. Its totient is φ = 7298040259584.

The previous prime is 21320444399983. The next prime is 21320444400023. The reversal of 21320444400010 is 1000444402312.

It is a super-2 number, since 2×21320444400010² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 107668812 + ... + 107866648.

It is an arithmetic number, because the mean of its divisors is an integer number (686409624252).

Almost surely, 2^{21320444400010} is an apocalyptic number.

21320444400010 is an abundant number, since it is smaller than the sum of its proper divisors (22609771552118).

21320444400010 is a wasteful number, since it uses less digits than its factorization.

21320444400010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200335.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21320444400010 its reverse (1000444402312), we get a palindrome (22320888802322).

The spelling of 21320444400010 in words is "twenty-one trillion, three hundred twenty billion, four hundred forty-four million, four hundred thousand, ten".