1121121202110 has 128 divisors (see below), whose sum is σ = 3401123088384. Its totient is φ = 230151144960.

The previous prime is 1121121202099. The next prime is 1121121202163. The reversal of 1121121202110 is 112021211211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121121202110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5448546 + ... + 5650565.

It is an arithmetic number, because the mean of its divisors is an integer number (26571274128).

Almost surely, 2^{1121121202110} is an apocalyptic number.

1121121202110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121121202110 is an abundant number, since it is smaller than the sum of its proper divisors (2280001886274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121121202110 is a wasteful number, since it uses less digits than its factorization.

1121121202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11099178.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121121202110 its reverse (112021211211), we get a palindrome (1233142413321).

It can be divided in two parts, 1121121 and 202110, that added together give a palindrome (1323231).

The spelling of 1121121202110 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, one hundred ten".