1021142120200 has 48 divisors (see below), whose sum is σ = 2375118942480. Its totient is φ = 408291082560.

The previous prime is 1021142120191. The next prime is 1021142120237. The reversal of 1021142120200 is 20212411201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541402 + ... + 1528201.

It is an arithmetic number, because the mean of its divisors is an integer number (49481644635).

Almost surely, 2^{1021142120200} is an apocalyptic number.

1021142120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021142120200 is an abundant number, since it is smaller than the sum of its proper divisors (1353976822280).

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

1021142120200 is a wasteful number, since it uses less digits than its factorization.

1021142120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072086 (or 2072077 counting only the distinct ones).

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

Adding to 1021142120200 its reverse (20212411201), we get a palindrome (1041354531401).

The spelling of 1021142120200 in words is "one trillion, twenty-one billion, one hundred forty-two million, one hundred twenty thousand, two hundred".