102121222112 has 96 divisors (see below), whose sum is σ = 250933261824. Its totient is φ = 39830515200.

The previous prime is 102121222111. The next prime is 102121222117. The reversal of 102121222112 is 211222121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121222111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40214 + ... + 453717.

It is an arithmetic number, because the mean of its divisors is an integer number (2613888144).

Almost surely, 2^102121222112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102121222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125466630912).

102121222112 is an abundant number, since it is smaller than the sum of its proper divisors (148812039712).

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

102121222112 is a wasteful number, since it uses less digits than its factorization.

102121222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494032 (or 494024 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102121222112 its reverse (211222121201), we get a palindrome (313343343313).

The spelling of 102121222112 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".