1021121201200 has 30 divisors (see below), whose sum is σ = 2453243686844. Its totient is φ = 408448480320.

The previous prime is 1021121201183. The next prime is 1021121201231. The reversal of 1021121201200 is 21021211201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1276401102 + ... + 1276401901.

Almost surely, 2^{1021121201200} is an apocalyptic number.

1021121201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021121201200 is an abundant number, since it is smaller than the sum of its proper divisors (1432122485644).

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

1021121201200 is a wasteful number, since it uses less digits than its factorization.

1021121201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552803021 (or 2552803010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021121201200 its reverse (21021211201), we get a palindrome (1042142412401).

The spelling of 1021121201200 in words is "one trillion, twenty-one billion, one hundred twenty-one million, two hundred one thousand, two hundred".