202121342023244 has 12 divisors (see below), whose sum is σ = 404242684046544. Its totient is φ = 86623432295664.

The previous prime is 202121342023189. The next prime is 202121342023253. The reversal of 202121342023244 is 442320243121202.

202121342023244 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 202121342023244.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3609309678959 + ... + 3609309679014.

It is an arithmetic number, because the mean of its divisors is an integer number (33686890337212).

Almost surely, 2^{202121342023244} is an apocalyptic number.

It is an amenable number.

202121342023244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202121342023244 is a wasteful number, since it uses less digits than its factorization.

202121342023244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7218619357984 (or 7218619357982 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 202121342023244 its reverse (442320243121202), we get a palindrome (644441585144446).

The spelling of 202121342023244 in words is "two hundred two trillion, one hundred twenty-one billion, three hundred forty-two million, twenty-three thousand, two hundred forty-four".