210171241421 has 8 divisors (see below), whose sum is σ = 211189676544. Its totient is φ = 209155264560.

The previous prime is 210171241393. The next prime is 210171241433. The reversal of 210171241421 is 124142171012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210171241421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210171241471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443045 + ... + 785258.

It is an arithmetic number, because the mean of its divisors is an integer number (26398709568).

Almost surely, 2^210171241421 is an apocalyptic number.

It is an amenable number.

210171241421 is a deficient number, since it is larger than the sum of its proper divisors (1018435123).

210171241421 is a wasteful number, since it uses less digits than its factorization.

210171241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229131.

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 210171241421 in words is "two hundred ten billion, one hundred seventy-one million, two hundred forty-one thousand, four hundred twenty-one".