101212100022221 has 8 divisors (see below), whose sum is σ = 103437883211520. Its totient is φ = 98989330760208.

The previous prime is 101212100022197. The next prime is 101212100022283. The reversal of 101212100022221 is 122220001212101.

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 101212100022221 - 2²² = 101212095827917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212100022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212130022221) 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, 753413921 + ... + 753548246.

It is an arithmetic number, because the mean of its divisors is an integer number (12929735401440).

Almost surely, 2^{101212100022221} is an apocalyptic number.

It is an amenable number.

101212100022221 is a deficient number, since it is larger than the sum of its proper divisors (2225783189299).

101212100022221 is a wasteful number, since it uses less digits than its factorization.

101212100022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506963643.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 101212100022221 its reverse (122220001212101), we get a palindrome (223432101234322).

The spelling of 101212100022221 in words is "one hundred one trillion, two hundred twelve billion, one hundred million, twenty-two thousand, two hundred twenty-one".