1221202000210 has 16 divisors (see below), whose sum is σ = 2269072104192. Its totient is φ = 472723354800.

The previous prime is 1221202000189. The next prime is 1221202000217. The reversal of 1221202000210 is 120002021221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1221202000217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1969680336 + ... + 1969680955.

It is an arithmetic number, because the mean of its divisors is an integer number (141817006512).

Almost surely, 2^{1221202000210} is an apocalyptic number.

1221202000210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221202000210 is a deficient number, since it is larger than the sum of its proper divisors (1047870103982).

1221202000210 is a wasteful number, since it uses less digits than its factorization.

1221202000210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939361329.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1221202000210 its reverse (120002021221), we get a palindrome (1341204021431).

The spelling of 1221202000210 in words is "one trillion, two hundred twenty-one billion, two hundred two million, two hundred ten", and thus it is an aban number.