201122431040 has 56 divisors (see below), whose sum is σ = 478976298840. Its totient is φ = 80439984128.

The previous prime is 201122431009. The next prime is 201122431051. The reversal of 201122431040 is 40134221102.

It can be written as a sum of positive squares in 4 ways, for example, as 4533059584 + 196589371456 = 67328^2 + 443384^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 3339434 + ... + 3399126.

Almost surely, 2^201122431040 is an apocalyptic number.

201122431040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201122431040 is an abundant number, since it is smaller than the sum of its proper divisors (277853867800).

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

201122431040 is a wasteful number, since it uses less digits than its factorization.

201122431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70239 (or 70229 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201122431040 its reverse (40134221102), we get a palindrome (241256652142).

The spelling of 201122431040 in words is "two hundred one billion, one hundred twenty-two million, four hundred thirty-one thousand, forty".