1211021100110 has 32 divisors (see below), whose sum is σ = 2206592388000. Its totient is φ = 478498942080.

The previous prime is 1211021100109. The next prime is 1211021100193. The reversal of 1211021100110 is 110011201121.

It is a junction number, because it is equal to n+sod(n) for n = 1211021100091 and 1211021100100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1975520 + ... + 2514899.

It is an arithmetic number, because the mean of its divisors is an integer number (68956012125).

Almost surely, 2^{1211021100110} is an apocalyptic number.

1211021100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211021100110 is a deficient number, since it is larger than the sum of its proper divisors (995571287890).

1211021100110 is a wasteful number, since it uses less digits than its factorization.

1211021100110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490756.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1211021100110 its reverse (110011201121), we get a palindrome (1321032301231).

It can be divided in two parts, 1211021 and 100110, that added together give a palindrome (1311131).

The spelling of 1211021100110 in words is "one trillion, two hundred eleven billion, twenty-one million, one hundred thousand, one hundred ten".