101221000201212 has 12 divisors (see below), whose sum is σ = 236182333802856. Its totient is φ = 33740333400400.

The previous prime is 101221000201177. The next prime is 101221000201213. The reversal of 101221000201212 is 212102000122101.

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

It is a junction number, because it is equal to n+sod(n) for n = 101221000201191 and 101221000201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221000201213) 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, 4217541675039 + ... + 4217541675062.

It is an arithmetic number, because the mean of its divisors is an integer number (19681861150238).

Almost surely, 2^{101221000201212} is an apocalyptic number.

101221000201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101221000201212 is an abundant number, since it is smaller than the sum of its proper divisors (134961333601644).

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

101221000201212 is a wasteful number, since it uses less digits than its factorization.

101221000201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435083350108 (or 8435083350106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101221000201212 its reverse (212102000122101), we get a palindrome (313323000323313).

The spelling of 101221000201212 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred one thousand, two hundred twelve".