1021022012009 has 8 divisors (see below), whose sum is σ = 1024021329408. Its totient is φ = 1018023876000.

The previous prime is 1021022011987. The next prime is 1021022012053. The reversal of 1021022012009 is 9002102201201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021022012009 - 2²⁴ = 1021005234793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021022012099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450829 + ... + 2036405.

It is an arithmetic number, because the mean of its divisors is an integer number (128002666176).

Almost surely, 2^{1021022012009} is an apocalyptic number.

It is an amenable number.

1021022012009 is a deficient number, since it is larger than the sum of its proper divisors (2999317399).

1021022012009 is an equidigital number, since it uses as much as digits as its factorization.

1021022012009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590695.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 1021022012009 in words is "one trillion, twenty-one billion, twenty-two million, twelve thousand, nine".