201121200987 has 16 divisors (see below), whose sum is σ = 316356544512. Its totient is φ = 111219096960.

The previous prime is 201121200979. The next prime is 201121201003. The reversal of 201121200987 is 789002121102.

It is not a de Polignac number, because 201121200987 - 2³ = 201121200979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201121200947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154470318 + ... + 154471619.

It is an arithmetic number, because the mean of its divisors is an integer number (19772284032).

Almost surely, 2^201121200987 is an apocalyptic number.

201121200987 is a deficient number, since it is larger than the sum of its proper divisors (115235343525).

201121200987 is a wasteful number, since it uses less digits than its factorization.

201121200987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308941978.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 201121200987 in words is "two hundred one billion, one hundred twenty-one million, two hundred thousand, nine hundred eighty-seven".