101221212211100 has 18 divisors (see below), whose sum is σ = 219650030498304. Its totient is φ = 40488484884400.

The previous prime is 101221212211099. The next prime is 101221212211121. The reversal of 101221212211100 is 1112212122101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506106060956 + ... + 506106061155.

It is an arithmetic number, because the mean of its divisors is an integer number (12202779472128).

Almost surely, 2^{101221212211100} is an apocalyptic number.

101221212211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221212211100 is an abundant number, since it is smaller than the sum of its proper divisors (118428818287204).

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

101221212211100 is a wasteful number, since it uses less digits than its factorization.

101221212211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012212122125 (or 1012212122118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101221212211100 its reverse (1112212122101), we get a palindrome (102333424333201).

The spelling of 101221212211100 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, one hundred".