10201212111 has 4 divisors (see below), whose sum is σ = 13601616152. Its totient is φ = 6800808072.

The previous prime is 10201212089. The next prime is 10201212137. The reversal of 10201212111 is 11121210201.

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

It is not a de Polignac number, because 10201212111 - 2²⁶ = 10134103247 is a prime.

It is a super-2 number, since 2×10201212111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201212311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1700202016 + ... + 1700202021.

It is an arithmetic number, because the mean of its divisors is an integer number (3400404038).

Almost surely, 2^10201212111 is an apocalyptic number.

10201212111 is a deficient number, since it is larger than the sum of its proper divisors (3400404041).

10201212111 is an equidigital number, since it uses as much as digits as its factorization.

10201212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400404040.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10201212111 its reverse (11121210201), we get a palindrome (21322422312).

The spelling of 10201212111 in words is "ten billion, two hundred one million, two hundred twelve thousand, one hundred eleven".