1101212101210 has 32 divisors (see below), whose sum is σ = 2135541097872. Its totient is φ = 406433049600.

The previous prime is 1101212101201. The next prime is 1101212101243. The reversal of 1101212101210 is 121012121011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 594636850129 + 506575251081 = 771127^2 + 711741^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438141 + ... + 2066560.

Almost surely, 2^{1101212101210} is an apocalyptic number.

1101212101210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1101212101210 is a deficient number, since it is larger than the sum of its proper divisors (1034328996662).

1101212101210 is a wasteful number, since it uses less digits than its factorization.

1101212101210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507138.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1101212101210 its reverse (121012121011), we get a palindrome (1222224222221).

The spelling of 1101212101210 in words is "one trillion, one hundred one billion, two hundred twelve million, one hundred one thousand, two hundred ten".