10121821436 has 12 divisors (see below), whose sum is σ = 18645460680. Its totient is φ = 4794546960.

The previous prime is 10121821429. The next prime is 10121821453. The reversal of 10121821436 is 63412812101.

It is a junction number, because it is equal to n+sod(n) for n = 10121821399 and 10121821408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66590855 + ... + 66591006.

It is an arithmetic number, because the mean of its divisors is an integer number (1553788390).

Almost surely, 2^10121821436 is an apocalyptic number.

It is an amenable number.

10121821436 is a deficient number, since it is larger than the sum of its proper divisors (8523639244).

10121821436 is a wasteful number, since it uses less digits than its factorization.

10121821436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133181884 (or 133181882 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 10121821436 in words is "ten billion, one hundred twenty-one million, eight hundred twenty-one thousand, four hundred thirty-six".