101221001210105 has 16 divisors (see below), whose sum is σ = 140114731720320. Its totient is φ = 68760007228032.

The previous prime is 101221001210071. The next prime is 101221001210111. The reversal of 101221001210105 is 501012100122101.

It is a cyclic number.

It is not a de Polignac number, because 101221001210105 - 2⁸ = 101221001209849 is a prime.

It is a super-2 number, since 2×101221001210105² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13514148620 + ... + 13514156109.

It is an arithmetic number, because the mean of its divisors is an integer number (8757170732520).

Almost surely, 2^{101221001210105} is an apocalyptic number.

It is an amenable number.

101221001210105 is a deficient number, since it is larger than the sum of its proper divisors (38893730510215).

101221001210105 is a wasteful number, since it uses less digits than its factorization.

101221001210105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27028304848.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 101221001210105 its reverse (501012100122101), we get a palindrome (602233101332206).

The spelling of 101221001210105 in words is "one hundred one trillion, two hundred twenty-one billion, one million, two hundred ten thousand, one hundred five".