101221001210106 has 12 divisors (see below), whose sum is σ = 219312169288602. Its totient is φ = 33740333736696.

The previous prime is 101221001210071. The next prime is 101221001210111. The reversal of 101221001210106 is 601012100122101.

101221001210106 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 87517241154225 + 13703760055881 = 9355065^2 + 3701859^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5623388956117 = 101221001210106 / (1 + 0 + 1 + 2 + 2 + 1 + 0 + 0 + 1 + 2 + 1 + 0 + 1 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2811694478041 + ... + 2811694478076.

Almost surely, 2^{101221001210106} is an apocalyptic number.

101221001210106 is an abundant number, since it is smaller than the sum of its proper divisors (118091168078496).

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

101221001210106 is a wasteful number, since it uses less digits than its factorization.

101221001210106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5623388956125 (or 5623388956122 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 101221001210106 its reverse (601012100122101), we get a palindrome (702233101332207).

The spelling of 101221001210106 in words is "one hundred one trillion, two hundred twenty-one billion, one million, two hundred ten thousand, one hundred six".