21110102202010 has 16 divisors (see below), whose sum is σ = 39308466169800. Its totient is φ = 8152867057216.

The previous prime is 21110102201959. The next prime is 21110102202043. The reversal of 21110102202010 is 1020220101112.

It can be written as a sum of positive squares in 4 ways, for example, as 13661946186849 + 7448156015161 = 3696207^2 + 2729131^2 .

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 7 ways as a sum of consecutive naturals, for example, 36396727645 + ... + 36396728224.

Almost surely, 2^{21110102202010} is an apocalyptic number.

21110102202010 is a deficient number, since it is larger than the sum of its proper divisors (18198363967790).

21110102202010 is a wasteful number, since it uses less digits than its factorization.

21110102202010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72793455905.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21110102202010 its reverse (1020220101112), we get a palindrome (22130322303122).

The spelling of 21110102202010 in words is "twenty-one trillion, one hundred ten billion, one hundred two million, two hundred two thousand, ten".