201235222205540 has 48 divisors (see below), whose sum is σ = 429788847216960. Its totient is φ = 79123840333440.

The previous prime is 201235222205503. The next prime is 201235222205597. The reversal of 201235222205540 is 45502222532102.

It is a super-2 number, since 2×201235222205540² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201235222205540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9334274 + ... + 22126886.

It is an arithmetic number, because the mean of its divisors is an integer number (8953934317020).

Almost surely, 2^{201235222205540} is an apocalyptic number.

201235222205540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201235222205540 is an abundant number, since it is smaller than the sum of its proper divisors (228553625011420).

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

201235222205540 is a wasteful number, since it uses less digits than its factorization.

201235222205540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12806012 (or 12806010 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

Adding to 201235222205540 its reverse (45502222532102), we get a palindrome (246737444737642).

The spelling of 201235222205540 in words is "two hundred one trillion, two hundred thirty-five billion, two hundred twenty-two million, two hundred five thousand, five hundred forty".