210021110202001 has 16 divisors (see below), whose sum is σ = 240347710514304. Its totient is φ = 179775418927104.

The previous prime is 210021110201977. The next prime is 210021110202023. The reversal of 210021110202001 is 100202011120012.

It is not a de Polignac number, because 210021110202001 - 2⁷ = 210021110201873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021110232001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202290846 + ... + 203326408.

It is an arithmetic number, because the mean of its divisors is an integer number (15021731907144).

Almost surely, 2^{210021110202001} is an apocalyptic number.

It is an amenable number.

210021110202001 is a deficient number, since it is larger than the sum of its proper divisors (30326600312303).

210021110202001 is a wasteful number, since it uses less digits than its factorization.

210021110202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074600.

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

Adding to 210021110202001 its reverse (100202011120012), we get a palindrome (310223121322013).

The spelling of 210021110202001 in words is "two hundred ten trillion, twenty-one billion, one hundred ten million, two hundred two thousand, one".