210121221220199 has 8 divisors (see below), whose sum is σ = 222189552574080. Its totient is φ = 198383529081600.

The previous prime is 210121221220133. The next prime is 210121221220201. The reversal of 210121221220199 is 991022122121012.

210121221220199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210121221220199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121221270199) 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, 82659802514 + ... + 82659805055.

It is an arithmetic number, because the mean of its divisors is an integer number (27773694071760).

Almost surely, 2^{210121221220199} is an apocalyptic number.

210121221220199 is a deficient number, since it is larger than the sum of its proper divisors (12068331353881).

210121221220199 is a wasteful number, since it uses less digits than its factorization.

210121221220199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165319607641.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 210121221220199 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty thousand, one hundred ninety-nine".