1011222212200 has 48 divisors (see below), whose sum is σ = 2351170815660. Its totient is φ = 404475264000.

The previous prime is 1011222212171. The next prime is 1011222212227. The reversal of 1011222212200 is 22122221101.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 330719306724 + 680502905476 = 575082^2 + 824926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7598230 + ... + 7730170.

Almost surely, 2^{1011222212200} is an apocalyptic number.

1011222212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011222212200 is an abundant number, since it is smaller than the sum of its proper divisors (1339948603460).

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

1011222212200 is a wasteful number, since it uses less digits than its factorization.

1011222212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170278 (or 170269 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1011222212200 its reverse (22122221101), we get a palindrome (1033344433301).

The spelling of 1011222212200 in words is "one trillion, eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred".