210121210195 has 16 divisors (see below), whose sum is σ = 271591820640. Its totient is φ = 155137538304.

The previous prime is 210121210151. The next prime is 210121210223. The reversal of 210121210195 is 591012121012.

210121210195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210121210195 - 2¹¹ = 210121208147 is a prime.

It is a super-2 number, since 2×210121210195² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53967 + ... + 650503.

It is an arithmetic number, because the mean of its divisors is an integer number (16974488790).

Almost surely, 2^210121210195 is an apocalyptic number.

210121210195 is a deficient number, since it is larger than the sum of its proper divisors (61470610445).

210121210195 is a wasteful number, since it uses less digits than its factorization.

210121210195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601974.

The product of its (nonzero) digits is 360, while the sum is 25.

The spelling of 210121210195 in words is "two hundred ten billion, one hundred twenty-one million, two hundred ten thousand, one hundred ninety-five".