1022121012200 has 48 divisors (see below), whose sum is σ = 2376954507660. Its totient is φ = 408758400000.

The previous prime is 1022121012151. The next prime is 1022121012217. The reversal of 1022121012200 is 22101212201.

It can be written as a sum of positive squares in 6 ways, for example, as 340264555684 + 681856456516 = 583322^2 + 825746^2 .

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, 351950 + ... + 1472450.

Almost surely, 2^{1022121012200} is an apocalyptic number.

1022121012200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022121012200 is an abundant number, since it is smaller than the sum of its proper divisors (1354833495460).

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

1022121012200 is a wasteful number, since it uses less digits than its factorization.

1022121012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125078 (or 1125069 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1022121012200 its reverse (22101212201), we get a palindrome (1044222224401).

The spelling of 1022121012200 in words is "one trillion, twenty-two billion, one hundred twenty-one million, twelve thousand, two hundred".