21101244104402 has 32 divisors (see below), whose sum is σ = 39690171379584. Its totient is φ = 8173742169600.

The previous prime is 21101244104321. The next prime is 21101244104459. The reversal of 21101244104402 is 20440144210112.

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 15 ways as a sum of consecutive naturals, for example, 395987999 + ... + 396041282.

It is an arithmetic number, because the mean of its divisors is an integer number (1240317855612).

Almost surely, 2^{21101244104402} is an apocalyptic number.

21101244104402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101244104402 is a deficient number, since it is larger than the sum of its proper divisors (18588927275182).

21101244104402 is a wasteful number, since it uses less digits than its factorization.

21101244104402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792029474.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 21101244104402 its reverse (20440144210112), we get a palindrome (41541388314514).

The spelling of 21101244104402 in words is "twenty-one trillion, one hundred one billion, two hundred forty-four million, one hundred four thousand, four hundred two".