1211100020110 has 16 divisors (see below), whose sum is σ = 2179992872736. Its totient is φ = 484437155488.

The previous prime is 1211100020107. The next prime is 1211100020113. The reversal of 1211100020110 is 110200011121.

It is an interprime number because it is at equal distance from previous prime (1211100020107) and next prime (1211100020113).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211100020113) 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, 2571912 + ... + 3006148.

It is an arithmetic number, because the mean of its divisors is an integer number (136249554546).

Almost surely, 2^{1211100020110} is an apocalyptic number.

1211100020110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211100020110 is a deficient number, since it is larger than the sum of its proper divisors (968892852626).

1211100020110 is a wasteful number, since it uses less digits than its factorization.

1211100020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713147.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1211100020110 its reverse (110200011121), we get a palindrome (1321300031231).

The spelling of 1211100020110 in words is "one trillion, two hundred eleven billion, one hundred million, twenty thousand, one hundred ten".