1211211011110 has 16 divisors (see below), whose sum is σ = 2180193991056. Its totient is φ = 484481255328.

The previous prime is 1211211011099. The next prime is 1211211011117. The reversal of 1211211011110 is 111101121121.

It is a super-2 number, since 2×1211211011110² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211211011117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808284 + ... + 2385856.

It is an arithmetic number, because the mean of its divisors is an integer number (136262124441).

Almost surely, 2^{1211211011110} is an apocalyptic number.

1211211011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211211011110 is a deficient number, since it is larger than the sum of its proper divisors (968982979946).

1211211011110 is a wasteful number, since it uses less digits than its factorization.

1211211011110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787287.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1211211011110 its reverse (111101121121), we get a palindrome (1322312132231).

The spelling of 1211211011110 in words is "one trillion, two hundred eleven billion, two hundred eleven million, eleven thousand, one hundred ten".