10121203111 has 8 divisors (see below), whose sum is σ = 10275724800. Its totient is φ = 9966783288.

The previous prime is 10121203093. The next prime is 10121203121. The reversal of 10121203111 is 11130212101.

It is a happy number.

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 10121203111 - 2⁹ = 10121202599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10121203091 and 10121203100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121203121) 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, 188340 + ... + 236038.

It is an arithmetic number, because the mean of its divisors is an integer number (1284465600).

Almost surely, 2^10121203111 is an apocalyptic number.

10121203111 is a deficient number, since it is larger than the sum of its proper divisors (154521689).

10121203111 is an equidigital number, since it uses as much as digits as its factorization.

10121203111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50933.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 10121203111 its reverse (11130212101), we get a palindrome (21251415212).

The spelling of 10121203111 in words is "ten billion, one hundred twenty-one million, two hundred three thousand, one hundred eleven".