121201000210000 has 50 divisors (see below), whose sum is σ = 293439741632642. Its totient is φ = 48480400080000.

The previous prime is 121201000209953. The next prime is 121201000210021. The reversal of 121201000210000 is 12000102121.

It can be written as a sum of positive squares in 5 ways, for example, as 63511081339456 + 57689918870544 = 7969384^2 + 7595388^2 .

It is a tau number, because it is divible by the number of its divisors (50).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6060040011 + ... + 6060060010.

Almost surely, 2^{121201000210000} is an apocalyptic number.

121201000210000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201000210000 is an abundant number, since it is smaller than the sum of its proper divisors (172238741422642).

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

121201000210000 is an equidigital number, since it uses as much as digits as its factorization.

121201000210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12120100049 (or 12120100028 counting only the distinct ones).

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

Adding to 121201000210000 its reverse (12000102121), we get a palindrome (121213000312121).

The spelling of 121201000210000 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred ten thousand".