201131001121 has 8 divisors (see below), whose sum is σ = 206838208800. Its totient is φ = 195500400480.

The previous prime is 201131001107. The next prime is 201131001133. The reversal of 201131001121 is 121100131102.

It is a happy number.

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-201131001121 is a prime.

It is a super-2 number, since 2×201131001121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201131001821) 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, 19146435 + ... + 19156936.

It is an arithmetic number, because the mean of its divisors is an integer number (25854776100).

Almost surely, 2^201131001121 is an apocalyptic number.

It is an amenable number.

201131001121 is a deficient number, since it is larger than the sum of its proper divisors (5707207679).

201131001121 is an equidigital number, since it uses as much as digits as its factorization.

201131001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38303519.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 201131001121 its reverse (121100131102), we get a palindrome (322231132223).

The spelling of 201131001121 in words is "two hundred one billion, one hundred thirty-one million, one thousand, one hundred twenty-one".