1022202121009 has 4 divisors (see below), whose sum is σ = 1047133880100. Its totient is φ = 997270361920.

The previous prime is 1022202120991. The next prime is 1022202121021. The reversal of 1022202121009 is 9001212022201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29548578609 + 992653542400 = 171897^2 + 996320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022202121009 - 2¹⁷ = 1022201989937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022202131009) 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, 12465879484 + ... + 12465879565.

It is an arithmetic number, because the mean of its divisors is an integer number (261783470025).

Almost surely, 2^{1022202121009} is an apocalyptic number.

It is an amenable number.

1022202121009 is a deficient number, since it is larger than the sum of its proper divisors (24931759091).

1022202121009 is an equidigital number, since it uses as much as digits as its factorization.

1022202121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24931759090.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 1022202121009 in words is "one trillion, twenty-two billion, two hundred two million, one hundred twenty-one thousand, nine".