217022129130 has 16 divisors (see below), whose sum is σ = 520853109984. Its totient is φ = 57872567760.

The previous prime is 217022129111. The next prime is 217022129131. The reversal of 217022129130 is 31921220712.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7234070971 = 217022129130 / (2 + 1 + 7 + 0 + 2 + 2 + 1 + 2 + 9 + 1 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (217022129131) 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, 3617035456 + ... + 3617035515.

It is an arithmetic number, because the mean of its divisors is an integer number (32553319374).

Almost surely, 2^217022129130 is an apocalyptic number.

217022129130 is an abundant number, since it is smaller than the sum of its proper divisors (303830980854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217022129130 is a wasteful number, since it uses less digits than its factorization.

217022129130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234070981.

The product of its (nonzero) digits is 3024, while the sum is 30.

Adding to 217022129130 its reverse (31921220712), we get a palindrome (248943349842).

The spelling of 217022129130 in words is "two hundred seventeen billion, twenty-two million, one hundred twenty-nine thousand, one hundred thirty".