102021202312 has 8 divisors (see below), whose sum is σ = 191289754350. Its totient is φ = 51010601152.

The previous prime is 102021202307. The next prime is 102021202319. The reversal of 102021202312 is 213202120201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 101808217476 + 212984836 = 319074^2 + 14594^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (102021202319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6376325137 + ... + 6376325152.

Almost surely, 2^102021202312 is an apocalyptic number.

It is an amenable number.

102021202312 is a deficient number, since it is larger than the sum of its proper divisors (89268552038).

102021202312 is a wasteful number, since it uses less digits than its factorization.

102021202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12752650295 (or 12752650291 counting only the distinct ones).

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

Adding to 102021202312 its reverse (213202120201), we get a palindrome (315223322513).

The spelling of 102021202312 in words is "one hundred two billion, twenty-one million, two hundred two thousand, three hundred twelve".