10111212221210 has 32 divisors (see below), whose sum is σ = 18362899752912. Its totient is φ = 4008331837440.

The previous prime is 10111212221161. The next prime is 10111212221219. The reversal of 10111212221210 is 1212221211101.

It can be written as a sum of positive squares in 8 ways, for example, as 4494260081089 + 5616952140121 = 2119967^2 + 2370011^2 .

It is a super-2 number, since 2×10111212221210² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10111212221219) 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, 12322970 + ... + 13117850.

Almost surely, 2^{10111212221210} is an apocalyptic number.

10111212221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10111212221210 is a deficient number, since it is larger than the sum of its proper divisors (8251687531702).

10111212221210 is a wasteful number, since it uses less digits than its factorization.

10111212221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806258.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10111212221210 its reverse (1212221211101), we get a palindrome (11323433432311).

The spelling of 10111212221210 in words is "ten trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-one thousand, two hundred ten".