1121222202210 has 160 divisors (see below), whose sum is σ = 3306142946304. Its totient is φ = 270387936000.

The previous prime is 1121222202209. The next prime is 1121222202229. The reversal of 1121222202210 is 122022221211.

It is a happy number.

1121222202210 is a `hidden beast` number, since 11 + 21 + 222 + 202 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1372390 + ... + 2031230.

Almost surely, 2^{1121222202210} is an apocalyptic number.

1121222202210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121222202210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653071473152).

1121222202210 is an abundant number, since it is smaller than the sum of its proper divisors (2184920744094).

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

1121222202210 is a wasteful number, since it uses less digits than its factorization.

1121222202210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659062 (or 659053 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1121222202210 its reverse (122022221211), we get a palindrome (1243244423421).

The spelling of 1121222202210 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred two thousand, two hundred ten".