170421261201 has 16 divisors (see below), whose sum is σ = 252585379200. Its totient is φ = 113564927664.

The previous prime is 170421261193. The next prime is 170421261211. The reversal of 170421261201 is 102162124071.

170421261201 is a `hidden beast` number, since 1 + 7 + 0 + 42 + 1 + 2 + 612 + 0 + 1 = 666.

It is not a de Polignac number, because 170421261201 - 2³ = 170421261193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (170421261211) 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, 1304461 + ... + 1429146.

It is an arithmetic number, because the mean of its divisors is an integer number (15786586200).

Almost surely, 2^170421261201 is an apocalyptic number.

It is an amenable number.

170421261201 is a deficient number, since it is larger than the sum of its proper divisors (82164117999).

170421261201 is a wasteful number, since it uses less digits than its factorization.

170421261201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735925 (or 2735919 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

Adding to 170421261201 its reverse (102162124071), we get a palindrome (272583385272).

The spelling of 170421261201 in words is "one hundred seventy billion, four hundred twenty-one million, two hundred sixty-one thousand, two hundred one".