101212101205 has 32 divisors (see below), whose sum is σ = 129204057600. Its totient is φ = 75897948672.

The previous prime is 101212101173. The next prime is 101212101227. The reversal of 101212101205 is 502101212101.

It is a cyclic number.

It is not a de Polignac number, because 101212101205 - 2⁵ = 101212101173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3550489 + ... + 3578881.

It is an arithmetic number, because the mean of its divisors is an integer number (4037626800).

Almost surely, 2^101212101205 is an apocalyptic number.

It is an amenable number.

101212101205 is a deficient number, since it is larger than the sum of its proper divisors (27991956395).

101212101205 is a wasteful number, since it uses less digits than its factorization.

101212101205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28813.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 101212101205 its reverse (502101212101), we get a palindrome (603313313306).

The spelling of 101212101205 in words is "one hundred one billion, two hundred twelve million, one hundred one thousand, two hundred five".