201121012195 has 8 divisors (see below), whose sum is σ = 241363609344. Its totient is φ = 160884546624.

The previous prime is 201121012177. The next prime is 201121012229. The reversal of 201121012195 is 591210121102.

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

It is a cyclic number.

It is not a de Polignac number, because 201121012195 - 2⁹ = 201121011683 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1460419 + ... + 1592188.

It is an arithmetic number, because the mean of its divisors is an integer number (30170451168).

Almost surely, 2^201121012195 is an apocalyptic number.

201121012195 is a deficient number, since it is larger than the sum of its proper divisors (40242597149).

201121012195 is a wasteful number, since it uses less digits than its factorization.

201121012195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065789.

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

Adding to 201121012195 its reverse (591210121102), we get a palindrome (792331133297).

The spelling of 201121012195 in words is "two hundred one billion, one hundred twenty-one million, twelve thousand, one hundred ninety-five".