101221222101212 has 12 divisors (see below), whose sum is σ = 177137249640960. Its totient is φ = 50610579346656.

The previous prime is 101221222101179. The next prime is 101221222101227. The reversal of 101221222101212 is 212101222122101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178328 + ... + 14229344.

It is an arithmetic number, because the mean of its divisors is an integer number (14761437470080).

Almost surely, 2^{101221222101212} is an apocalyptic number.

It is an amenable number.

101221222101212 is a deficient number, since it is larger than the sum of its proper divisors (75916027539748).

101221222101212 is a wasteful number, since it uses less digits than its factorization.

101221222101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15851980 (or 15851978 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 101221222101212 its reverse (212101222122101), we get a palindrome (313322444223313).

The spelling of 101221222101212 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, two hundred twelve".