10021212452409 has 4 divisors (see below), whose sum is σ = 13361616603216. Its totient is φ = 6680808301604.

The previous prime is 10021212452393. The next prime is 10021212452431. The reversal of 10021212452409 is 90425421212001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10021212452409 - 2⁴ = 10021212452393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021212452409.

It is not an unprimeable number, because it can be changed into a prime (10021212459409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670202075399 + ... + 1670202075404.

It is an arithmetic number, because the mean of its divisors is an integer number (3340404150804).

Almost surely, 2^{10021212452409} is an apocalyptic number.

It is an amenable number.

10021212452409 is a deficient number, since it is larger than the sum of its proper divisors (3340404150807).

10021212452409 is an equidigital number, since it uses as much as digits as its factorization.

10021212452409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340404150806.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 10021212452409 in words is "ten trillion, twenty-one billion, two hundred twelve million, four hundred fifty-two thousand, four hundred nine".