9952129111 has 4 divisors (see below), whose sum is σ = 10475925400. Its totient is φ = 9428332824.

The previous prime is 9952129037. The next prime is 9952129127. The reversal of 9952129111 is 1119212599.

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 9952129111 - 2¹⁷ = 9951998039 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 (9952120111) 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, 261898116 + ... + 261898153.

It is an arithmetic number, because the mean of its divisors is an integer number (2618981350).

Almost surely, 2^9952129111 is an apocalyptic number.

9952129111 is a deficient number, since it is larger than the sum of its proper divisors (523796289).

9952129111 is a wasteful number, since it uses less digits than its factorization.

9952129111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523796288.

The product of its digits is 14580, while the sum is 40.

The square root of 9952129111 is about 99760.3584145526. The cubic root of 9952129111 is about 2150.9913662103.

The spelling of 9952129111 in words is "nine billion, nine hundred fifty-two million, one hundred twenty-nine thousand, one hundred eleven".