101212120212221 has 8 divisors (see below), whose sum is σ = 103445717052384. Its totient is φ = 99002670365200.

The previous prime is 101212120212197. The next prime is 101212120212283. The reversal of 101212120212221 is 122212021212101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101212120212221 - 2⁴⁶ = 30843376034557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101212120212193 and 101212120212202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212120212821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6036739811 + ... + 6036756576.

It is an arithmetic number, because the mean of its divisors is an integer number (12930714631548).

Almost surely, 2^{101212120212221} is an apocalyptic number.

It is an amenable number.

101212120212221 is a deficient number, since it is larger than the sum of its proper divisors (2233596840163).

101212120212221 is a wasteful number, since it uses less digits than its factorization.

101212120212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12073496571.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 101212120212221 its reverse (122212021212101), we get a palindrome (223424141424322).

The spelling of 101212120212221 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-one".