21211021000202 has 32 divisors (see below), whose sum is σ = 34753684538880. Its totient is φ = 9628949332080.

The previous prime is 21211021000199. The next prime is 21211021000229. The reversal of 21211021000202 is 20200012011212.

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 15 ways as a sum of consecutive naturals, for example, 103150613 + ... + 103356039.

It is an arithmetic number, because the mean of its divisors is an integer number (1086052641840).

Almost surely, 2^{21211021000202} is an apocalyptic number.

21211021000202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21211021000202 is a deficient number, since it is larger than the sum of its proper divisors (13542663538678).

21211021000202 is a wasteful number, since it uses less digits than its factorization.

21211021000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211466.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21211021000202 its reverse (20200012011212), we get a palindrome (41411033011414).

The spelling of 21211021000202 in words is "twenty-one trillion, two hundred eleven billion, twenty-one million, two hundred two", and thus it is an aban number.