1021121000200 has 48 divisors (see below), whose sum is σ = 2713264375680. Its totient is φ = 350098628160.

The previous prime is 1021121000197. The next prime is 1021121000329. The reversal of 1021121000200 is 20001211201.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 364684672 + ... + 364687471.

It is an arithmetic number, because the mean of its divisors is an integer number (56526341160).

Almost surely, 2^{1021121000200} is an apocalyptic number.

1021121000200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021121000200 is an abundant number, since it is smaller than the sum of its proper divisors (1692143375480).

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

1021121000200 is a wasteful number, since it uses less digits than its factorization.

1021121000200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729372166 (or 729372157 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021121000200 its reverse (20001211201), we get a palindrome (1041122211401).

The spelling of 1021121000200 in words is "one trillion, twenty-one billion, one hundred twenty-one million, two hundred", and thus it is an aban number.