210002000122172 has 24 divisors (see below), whose sum is σ = 389121900214320. Its totient is φ = 98824331713280.

The previous prime is 210002000122171. The next prime is 210002000122219. The reversal of 210002000122172 is 271221000200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002000122171) 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, 59231279 + ... + 62676537.

It is an arithmetic number, because the mean of its divisors is an integer number (16213412508930).

Almost surely, 2^{210002000122172} is an apocalyptic number.

It is an amenable number.

210002000122172 is a deficient number, since it is larger than the sum of its proper divisors (179119900092148).

210002000122172 is a wasteful number, since it uses less digits than its factorization.

210002000122172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341661 (or 4341659 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 210002000122172 its reverse (271221000200012), we get a palindrome (481223000322184).

The spelling of 210002000122172 in words is "two hundred ten trillion, two billion, one hundred twenty-two thousand, one hundred seventy-two".