21100220302 has 16 divisors (see below), whose sum is σ = 36173704320. Its totient is φ = 9042477048.

The previous prime is 21100220291. The next prime is 21100220329. The reversal of 21100220302 is 20302200112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424849 + ... + 471907.

It is an arithmetic number, because the mean of its divisors is an integer number (2260856520).

Almost surely, 2^21100220302 is an apocalyptic number.

21100220302 is a deficient number, since it is larger than the sum of its proper divisors (15073484018).

21100220302 is a wasteful number, since it uses less digits than its factorization.

21100220302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79095.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21100220302 its reverse (20302200112), we get a palindrome (41402420414).

The spelling of 21100220302 in words is "twenty-one billion, one hundred million, two hundred twenty thousand, three hundred two".