10203111123102 has 96 divisors (see below), whose sum is σ = 23029874225280. Its totient is φ = 3260743073280.

The previous prime is 10203111123091. The next prime is 10203111123133. The reversal of 10203111123102 is 20132111130201.

10203111123102 is a `hidden beast` number, since 10 + 20 + 311 + 1 + 12 + 310 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44522452 + ... + 44751032.

It is an arithmetic number, because the mean of its divisors is an integer number (239894523180).

Almost surely, 2^{10203111123102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10203111123102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11514937112640).

10203111123102 is an abundant number, since it is smaller than the sum of its proper divisors (12826763102178).

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

10203111123102 is a wasteful number, since it uses less digits than its factorization.

10203111123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229218 (or 229215 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 10203111123102 its reverse (20132111130201), we get a palindrome (30335222253303).

The spelling of 10203111123102 in words is "ten trillion, two hundred three billion, one hundred eleven million, one hundred twenty-three thousand, one hundred two".