1211101221110 has 16 divisors (see below), whose sum is σ = 2378162398032. Its totient is φ = 440400444000.

The previous prime is 1211101221061. The next prime is 1211101221131. The reversal of 1211101221110 is 111221011121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5505005441 + ... + 5505005660.

It is an arithmetic number, because the mean of its divisors is an integer number (148635149877).

Almost surely, 2^{1211101221110} is an apocalyptic number.

1211101221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211101221110 is a deficient number, since it is larger than the sum of its proper divisors (1167061176922).

1211101221110 is a wasteful number, since it uses less digits than its factorization.

1211101221110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11010011119.

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

Adding to 1211101221110 its reverse (111221011121), we get a palindrome (1322322232231).

The spelling of 1211101221110 in words is "one trillion, two hundred eleven billion, one hundred one million, two hundred twenty-one thousand, one hundred ten".