101212001222221 has 8 divisors (see below), whose sum is σ = 101700903353184. Its totient is φ = 100723186114320.

The previous prime is 101212001222209. The next prime is 101212001222237. The reversal of 101212001222221 is 122222100212101.

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 101212001222221 - 2²³ = 101211992833613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212001222621) 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, 19423450 + ... + 24076843.

It is an arithmetic number, because the mean of its divisors is an integer number (12712612919148).

Almost surely, 2^{101212001222221} is an apocalyptic number.

It is an amenable number.

101212001222221 is a deficient number, since it is larger than the sum of its proper divisors (488902130963).

101212001222221 is a wasteful number, since it uses less digits than its factorization.

101212001222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43511531.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 101212001222221 its reverse (122222100212101), we get a palindrome (223434101434322).

The spelling of 101212001222221 in words is "one hundred one trillion, two hundred twelve billion, one million, two hundred twenty-two thousand, two hundred twenty-one".