101212121112102 has 256 divisors, whose sum is σ = 315114664919040. Its totient is φ = 23211570729600.

The previous prime is 101212121112097. The next prime is 101212121112149. The reversal of 101212121112102 is 201211121212101.

It is a happy number.

101212121112102 is a `hidden beast` number, since 10 + 121 + 212 + 111 + 210 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 39461674 + ... + 41948157.

It is an arithmetic number, because the mean of its divisors is an integer number (1230916659840).

Almost surely, 2^{101212121112102} is an apocalyptic number.

101212121112102 is an abundant number, since it is smaller than the sum of its proper divisors (213902543806938).

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

101212121112102 is a wasteful number, since it uses less digits than its factorization.

101212121112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81409896 (or 81409890 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 101212121112102 its reverse (201211121212101), we get a palindrome (302423242324203).

Subtracting 101212121112102 from its reverse (201211121212101), we obtain a palindrome (99999000099999).

The spelling of 101212121112102 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty-one million, one hundred twelve thousand, one hundred two".