1021212101009 has 8 divisors (see below), whose sum is σ = 1054193940480. Its totient is φ = 988232731200.

The previous prime is 1021212100957. The next prime is 1021212101011. The reversal of 1021212101009 is 9001012121201.

1021212101009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1021212101009 - 2²⁴ = 1021195323793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021212101069) 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, 241952 + ... + 1449470.

It is an arithmetic number, because the mean of its divisors is an integer number (131774242560).

Almost surely, 2^{1021212101009} is an apocalyptic number.

It is an amenable number.

1021212101009 is a deficient number, since it is larger than the sum of its proper divisors (32981839471).

1021212101009 is a wasteful number, since it uses less digits than its factorization.

1021212101009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234831.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1021212101009 in words is "one trillion, twenty-one billion, two hundred twelve million, one hundred one thousand, nine".