10203012011111 has 4 divisors (see below), whose sum is σ = 10395521671752. Its totient is φ = 10010502350472.

The previous prime is 10203012011089. The next prime is 10203012011117. The reversal of 10203012011111 is 11111021030201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10203012011111 - 2⁶ = 10203012011047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203012011117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96254830241 + ... + 96254830346.

It is an arithmetic number, because the mean of its divisors is an integer number (2598880417938).

Almost surely, 2^{10203012011111} is an apocalyptic number.

10203012011111 is a deficient number, since it is larger than the sum of its proper divisors (192509660641).

10203012011111 is an equidigital number, since it uses as much as digits as its factorization.

10203012011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192509660640.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 10203012011111 its reverse (11111021030201), we get a palindrome (21314033041312).

The spelling of 10203012011111 in words is "ten trillion, two hundred three billion, twelve million, eleven thousand, one hundred eleven".