101212122121112 has 128 divisors (see below), whose sum is σ = 211998551616000. Its totient is φ = 45076710159360.

The previous prime is 101212122121091. The next prime is 101212122121127. The reversal of 101212122121112 is 211121221212101.

It is a happy number.

It is a super-2 number, since 2×101212122121112² (a number of 29 digits) contains 22 as substring.

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, 3715419812 + ... + 3715447052.

It is an arithmetic number, because the mean of its divisors is an integer number (1656238684500).

Almost surely, 2^{101212122121112} is an apocalyptic number.

It is an amenable number.

101212122121112 is an abundant number, since it is smaller than the sum of its proper divisors (110786429494888).

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

101212122121112 is a wasteful number, since it uses less digits than its factorization.

101212122121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45361 (or 45357 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 101212122121112 its reverse (211121221212101), we get a palindrome (312333343333213).

The spelling of 101212122121112 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twelve".