1011112121210 has 8 divisors (see below), whose sum is σ = 1820001818196. Its totient is φ = 404444848480.

The previous prime is 1011112121207. The next prime is 1011112121219. The reversal of 1011112121210 is 121212111101.

It can be written as a sum of positive squares in 2 ways, for example, as 927509603329 + 83602517881 = 963073^2 + 289141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1011112121219) 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, 50555606051 + ... + 50555606070.

Almost surely, 2^{1011112121210} is an apocalyptic number.

1011112121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1011112121210 is a deficient number, since it is larger than the sum of its proper divisors (808889696986).

1011112121210 is a wasteful number, since it uses less digits than its factorization.

1011112121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101111212128.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1011112121210 its reverse (121212111101), we get a palindrome (1132324232311).

The spelling of 1011112121210 in words is "one trillion, eleven billion, one hundred twelve million, one hundred twenty-one thousand, two hundred ten".