1211121020110 has 8 divisors (see below), whose sum is σ = 2180017836216. Its totient is φ = 484448408040.

The previous prime is 1211121020033. The next prime is 1211121020119. The reversal of 1211121020110 is 110201211121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211121020119) 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, 60556050996 + ... + 60556051015.

It is an arithmetic number, because the mean of its divisors is an integer number (272502229527).

Almost surely, 2^{1211121020110} is an apocalyptic number.

1211121020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211121020110 is a deficient number, since it is larger than the sum of its proper divisors (968896816106).

1211121020110 is a wasteful number, since it uses less digits than its factorization.

1211121020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121112102018.

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

Adding to 1211121020110 its reverse (110201211121), we get a palindrome (1321322231231).

The spelling of 1211121020110 in words is "one trillion, two hundred eleven billion, one hundred twenty-one million, twenty thousand, one hundred ten".