1210200012021 has 192 divisors, whose sum is σ = 2363304093696. Its totient is φ = 540074304000.

The previous prime is 1210200012019. The next prime is 1210200012079. The reversal of 1210200012021 is 1202100020121.

It is not a de Polignac number, because 1210200012021 - 2¹ = 1210200012019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210200011988 and 1210200012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210200012011) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17855046 + ... + 17922696.

It is an arithmetic number, because the mean of its divisors is an integer number (12308875488).

Almost surely, 2^{1210200012021} is an apocalyptic number.

1210200012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210200012021 is a deficient number, since it is larger than the sum of its proper divisors (1153104081675).

1210200012021 is a wasteful number, since it uses less digits than its factorization.

1210200012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67752 (or 67745 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1210200012021 its reverse (1202100020121), we get a palindrome (2412300032142).

The spelling of 1210200012021 in words is "one trillion, two hundred ten billion, two hundred million, twelve thousand, twenty-one".