21210001020214 has 16 divisors (see below), whose sum is σ = 32591105976240. Its totient is φ = 10346301072640.

The previous prime is 21210001020209. The next prime is 21210001020233. The reversal of 21210001020214 is 41202010001212.

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, 37472142 + ... + 38033950.

It is an arithmetic number, because the mean of its divisors is an integer number (2036944123515).

Almost surely, 2^{21210001020214} is an apocalyptic number.

21210001020214 is a deficient number, since it is larger than the sum of its proper divisors (11381104956026).

21210001020214 is a wasteful number, since it uses less digits than its factorization.

21210001020214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022255.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21210001020214 its reverse (41202010001212), we get a palindrome (62412011021426).

The spelling of 21210001020214 in words is "twenty-one trillion, two hundred ten billion, one million, twenty thousand, two hundred fourteen".