203121010231211 has 8 divisors (see below), whose sum is σ = 215074775793600. Its totient is φ = 191167852540288.

The previous prime is 203121010231199. The next prime is 203121010231213. The reversal of 203121010231211 is 112132010121302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203121010231211 - 2³⁰ = 203119936489387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203121010231213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151279811 + ... + 152616588.

It is an arithmetic number, because the mean of its divisors is an integer number (26884346974200).

Almost surely, 2^{203121010231211} is an apocalyptic number.

203121010231211 is a deficient number, since it is larger than the sum of its proper divisors (11953765562389).

203121010231211 is a wasteful number, since it uses less digits than its factorization.

203121010231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303935733.

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

Adding to 203121010231211 its reverse (112132010121302), we get a palindrome (315253020352513).

The spelling of 203121010231211 in words is "two hundred three trillion, one hundred twenty-one billion, ten million, two hundred thirty-one thousand, two hundred eleven".