1121222200220 has 24 divisors (see below), whose sum is σ = 2360029670208. Its totient is φ = 447448299200.

The previous prime is 1121222200073. The next prime is 1121222200237. The reversal of 1121222200220 is 220022221211.

It is a happy number.

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, 65027471 + ... + 65044710.

It is an arithmetic number, because the mean of its divisors is an integer number (98334569592).

Almost surely, 2^{1121222200220} is an apocalyptic number.

1121222200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121222200220 is an abundant number, since it is smaller than the sum of its proper divisors (1238807469988).

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

1121222200220 is a wasteful number, since it uses less digits than its factorization.

1121222200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130072621 (or 130072619 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1121222200220 its reverse (220022221211), we get a palindrome (1341244421431).

The spelling of 1121222200220 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred thousand, two hundred twenty".