10202121340 has 24 divisors (see below), whose sum is σ = 21428521632. Its totient is φ = 4080073920.

The previous prime is 10202121313. The next prime is 10202121361. The reversal of 10202121340 is 4312120201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66202 + ... + 157438.

It is an arithmetic number, because the mean of its divisors is an integer number (892855068).

Almost surely, 2^10202121340 is an apocalyptic number.

10202121340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10202121340 is an abundant number, since it is smaller than the sum of its proper divisors (11226400292).

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

10202121340 is a wasteful number, since it uses less digits than its factorization.

10202121340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96837 (or 96835 counting only the distinct ones).

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

Adding to 10202121340 its reverse (4312120201), we get a palindrome (14514241541).

The spelling of 10202121340 in words is "ten billion, two hundred two million, one hundred twenty-one thousand, three hundred forty".