202440121069 has 2 divisors, whose sum is σ = 202440121070. Its totient is φ = 202440121068.

The previous prime is 202440121033. The next prime is 202440121109. The reversal of 202440121069 is 960121044202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136059175044 + 66380946025 = 368862^2 + 257645^2 .

It is a cyclic number.

It is not a de Polignac number, because 202440121069 - 2²¹ = 202438023917 is a prime.

It is a super-2 number, since 2×202440121069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 202440121069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202440121019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101220060534 + 101220060535.

It is an arithmetic number, because the mean of its divisors is an integer number (101220060535).

Almost surely, 2^202440121069 is an apocalyptic number.

It is an amenable number.

202440121069 is a deficient number, since it is larger than the sum of its proper divisors (1).

202440121069 is an equidigital number, since it uses as much as digits as its factorization.

202440121069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 202440121069 in words is "two hundred two billion, four hundred forty million, one hundred twenty-one thousand, sixty-nine".