97129221311 has 4 divisors (see below), whose sum is σ = 97168436232. Its totient is φ = 97090006392.

The previous prime is 97129221289. The next prime is 97129221361. The reversal of 97129221311 is 11312292179.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97129221311 - 2¹⁴ = 97129204927 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 (97129221361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19603745 + ... + 19608698.

It is an arithmetic number, because the mean of its divisors is an integer number (24292109058).

Almost surely, 2^97129221311 is an apocalyptic number.

97129221311 is a deficient number, since it is larger than the sum of its proper divisors (39214921).

97129221311 is a wasteful number, since it uses less digits than its factorization.

97129221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39214920.

The product of its digits is 13608, while the sum is 38.

The spelling of 97129221311 in words is "ninety-seven billion, one hundred twenty-nine million, two hundred twenty-one thousand, three hundred eleven".