10111212197 has 16 divisors (see below), whose sum is σ = 10929508800. Its totient is φ = 9324771840.

The previous prime is 10111212187. The next prime is 10111212203. The reversal of 10111212197 is 79121211101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111212197 is a prime.

It is a super-2 number, since 2×10111212197² (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 (10111212127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67454 + ... + 157392.

It is an arithmetic number, because the mean of its divisors is an integer number (683094300).

Almost surely, 2^10111212197 is an apocalyptic number.

It is an amenable number.

10111212197 is a deficient number, since it is larger than the sum of its proper divisors (818296603).

10111212197 is an equidigital number, since it uses as much as digits as its factorization.

10111212197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90116.

The product of its (nonzero) digits is 252, while the sum is 26.

Adding to 10111212197 its reverse (79121211101), we get a palindrome (89232423298).

The spelling of 10111212197 in words is "ten billion, one hundred eleven million, two hundred twelve thousand, one hundred ninety-seven".