1020212201009 has 4 divisors (see below), whose sum is σ = 1020217592304. Its totient is φ = 1020206809716.

The previous prime is 1020212200901. The next prime is 1020212201011. The reversal of 1020212201009 is 9001022120201.

It is a happy number.

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 1020212201009 - 2¹⁶ = 1020212135473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020212207009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2401067 + ... + 2793840.

It is an arithmetic number, because the mean of its divisors is an integer number (255054398076).

Almost surely, 2^{1020212201009} is an apocalyptic number.

It is an amenable number.

1020212201009 is a deficient number, since it is larger than the sum of its proper divisors (5391295).

1020212201009 is an equidigital number, since it uses as much as digits as its factorization.

1020212201009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5391294.

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

It can be divided in two parts, 1020212 and 201009, that added together give a palindrome (1221221).

The spelling of 1020212201009 in words is "one trillion, twenty billion, two hundred twelve million, two hundred one thousand, nine".