201111621150 has 96 divisors (see below), whose sum is σ = 561650052096. Its totient is φ = 47181600000.

The previous prime is 201111621143. The next prime is 201111621157. The reversal of 201111621150 is 51126111102.

It is an interprime number because it is at equal distance from previous prime (201111621143) and next prime (201111621157).

It is a super-2 number, since 2×201111621150² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111621157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1914751 + ... + 2017050.

It is an arithmetic number, because the mean of its divisors is an integer number (5850521376).

Almost surely, 2^201111621150 is an apocalyptic number.

201111621150 is an abundant number, since it is smaller than the sum of its proper divisors (360538430946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201111621150 is a wasteful number, since it uses less digits than its factorization.

201111621150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3931858 (or 3931853 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 21.

Adding to 201111621150 its reverse (51126111102), we get a palindrome (252237732252).

The spelling of 201111621150 in words is "two hundred one billion, one hundred eleven million, six hundred twenty-one thousand, one hundred fifty".