21012011010202 has 8 divisors (see below), whose sum is σ = 31518781583616. Its totient is φ = 10505750482332.

The previous prime is 21012011010083. The next prime is 21012011010233. The reversal of 21012011010202 is 20201011021012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127408378 + ... + 127573189.

It is an arithmetic number, because the mean of its divisors is an integer number (3939847697952).

Almost surely, 2^{21012011010202} is an apocalyptic number.

21012011010202 is a deficient number, since it is larger than the sum of its proper divisors (10506770573414).

21012011010202 is a wasteful number, since it uses less digits than its factorization.

21012011010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255022772.

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

Adding to 21012011010202 its reverse (20201011021012), we get a palindrome (41213022031214).

The spelling of 21012011010202 in words is "twenty-one trillion, twelve billion, eleven million, ten thousand, two hundred two".