201122040 has 64 divisors (see below), whose sum is σ = 689564160. Its totient is φ = 45970560.

The previous prime is 201122039. The next prime is 201122057. The reversal of 201122040 is 40221102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118876 + ... + 120555.

It is an arithmetic number, because the mean of its divisors is an integer number (10774440).

Almost surely, 2^201122040 is an apocalyptic number.

201122040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122040 is an abundant number, since it is smaller than the sum of its proper divisors (488442120).

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

201122040 is a wasteful number, since it uses less digits than its factorization.

201122040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239452 (or 239448 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 201122040 is about 14181.7502445925. The cubic root of 201122040 is about 585.8951304687.

Adding to 201122040 its reverse (40221102), we get a palindrome (241343142).

The spelling of 201122040 in words is "two hundred one million, one hundred twenty-two thousand, forty".