101212122220221 has 8 divisors (see below), whose sum is σ = 134949831861600. Its totient is φ = 67474580362832.

The previous prime is 101212122220189. The next prime is 101212122220229. The reversal of 101212122220221 is 122022221212101.

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 101212122220221 - 2⁵ = 101212122220189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212122220229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40531650 + ... + 42956243.

It is an arithmetic number, because the mean of its divisors is an integer number (16868728982700).

Almost surely, 2^{101212122220221} is an apocalyptic number.

It is an amenable number.

101212122220221 is a deficient number, since it is larger than the sum of its proper divisors (33737709641379).

101212122220221 is an equidigital number, since it uses as much as digits as its factorization.

101212122220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83891995.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 101212122220221 its reverse (122022221212101), we get a palindrome (223234343432322).

The spelling of 101212122220221 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty-one".