203202021010121 has 16 divisors (see below), whose sum is σ = 248596839782400. Its totient is φ = 162209437945488.

The previous prime is 203202021010111. The next prime is 203202021010129. The reversal of 203202021010121 is 121010120202302.

It is a cyclic number.

It is not a de Polignac number, because 203202021010121 - 2³⁴ = 203184841140937 is a prime.

It is a super-2 number, since 2×203202021010121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203202021010121.

It is not an unprimeable number, because it can be changed into a prime (203202021010129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12947744225 + ... + 12947759918.

It is an arithmetic number, because the mean of its divisors is an integer number (15537302486400).

Almost surely, 2^{203202021010121} is an apocalyptic number.

It is an amenable number.

203202021010121 is a deficient number, since it is larger than the sum of its proper divisors (45394818772279).

203202021010121 is a wasteful number, since it uses less digits than its factorization.

203202021010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25895504228.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 203202021010121 its reverse (121010120202302), we get a palindrome (324212141212423).

The spelling of 203202021010121 in words is "two hundred three trillion, two hundred two billion, twenty-one million, ten thousand, one hundred twenty-one".