1100212121210 has 32 divisors (see below), whose sum is σ = 1984806493200. Its totient is φ = 439102218240.

The previous prime is 1100212121171. The next prime is 1100212121251. The reversal of 1100212121210 is 121212120011.

It can be written as a sum of positive squares in 8 ways, for example, as 512351029369 + 587861091841 = 715787^2 + 766721^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14509676 + ... + 14585304.

Almost surely, 2^{1100212121210} is an apocalyptic number.

1100212121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1100212121210 is a deficient number, since it is larger than the sum of its proper divisors (884594371990).

1100212121210 is a wasteful number, since it uses less digits than its factorization.

1100212121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78866.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1100212121210 its reverse (121212120011), we get a palindrome (1221424241221).

The spelling of 1100212121210 in words is "one trillion, one hundred billion, two hundred twelve million, one hundred twenty-one thousand, two hundred ten".