102202021312 has 56 divisors (see below), whose sum is σ = 212026500000. Its totient is φ = 48878855168.

The previous prime is 102202021283. The next prime is 102202021333. The reversal of 102202021312 is 213120202201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713064 + ... + 844312.

It is an arithmetic number, because the mean of its divisors is an integer number (3786187500).

Almost surely, 2^102202021312 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 102202021312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106013250000).

102202021312 is an abundant number, since it is smaller than the sum of its proper divisors (109824478688).

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

102202021312 is an frugal number, since it uses more digits than its factorization.

102202021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131330 (or 131274 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 102202021312 its reverse (213120202201), we get a palindrome (315322223513).

The spelling of 102202021312 in words is "one hundred two billion, two hundred two million, twenty-one thousand, three hundred twelve".