10203121322312 has 8 divisors (see below), whose sum is σ = 19130852479350. Its totient is φ = 5101560661152.

The previous prime is 10203121322309. The next prime is 10203121322369. The reversal of 10203121322312 is 21322312130201.

It can be written as a sum of positive squares in only one way, i.e., 9799116165316 + 404005156996 = 3130354^2 + 635614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637695082637 + ... + 637695082652.

Almost surely, 2^{10203121322312} is an apocalyptic number.

It is an amenable number.

10203121322312 is a deficient number, since it is larger than the sum of its proper divisors (8927731157038).

10203121322312 is a wasteful number, since it uses less digits than its factorization.

10203121322312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275390165295 (or 1275390165291 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 10203121322312 its reverse (21322312130201), we get a palindrome (31525433452513).

The spelling of 10203121322312 in words is "ten trillion, two hundred three billion, one hundred twenty-one million, three hundred twenty-two thousand, three hundred twelve".