101210111988 has 12 divisors (see below), whose sum is σ = 236156928000. Its totient is φ = 33736703992.

The previous prime is 101210111957. The next prime is 101210112023. The reversal of 101210111988 is 889111012101.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×101210111988³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217087988 + ... + 4217088011.

It is an arithmetic number, because the mean of its divisors is an integer number (19679744000).

Almost surely, 2^101210111988 is an apocalyptic number.

It is an amenable number.

101210111988 is an abundant number, since it is smaller than the sum of its proper divisors (134946816012).

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

101210111988 is a wasteful number, since it uses less digits than its factorization.

101210111988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8434176006 (or 8434176004 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 33.

The spelling of 101210111988 in words is "one hundred one billion, two hundred ten million, one hundred eleven thousand, nine hundred eighty-eight".