101212311100 has 36 divisors (see below), whose sum is σ = 223353282600. Its totient is φ = 39798736960.

The previous prime is 101212311089. The next prime is 101212311107. The reversal of 101212311100 is 1113212101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212311107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8571415 + ... + 8583214.

It is an arithmetic number, because the mean of its divisors is an integer number (6204257850).

Almost surely, 2^101212311100 is an apocalyptic number.

101212311100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212311100 is an abundant number, since it is smaller than the sum of its proper divisors (122140971500).

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

101212311100 is a wasteful number, since it uses less digits than its factorization.

101212311100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17154702 (or 17154695 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 101212311100 its reverse (1113212101), we get a palindrome (102325523201).

The spelling of 101212311100 in words is "one hundred one billion, two hundred twelve million, three hundred eleven thousand, one hundred".