201202223100 has 144 divisors (see below), whose sum is σ = 592643318400. Its totient is φ = 52689196800.

The previous prime is 201202223059. The next prime is 201202223107. The reversal of 201202223100 is 1322202102.

It is a happy number.

It is a super-2 number, since 2×201202223100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201202223100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202223107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11758351 + ... + 11775449.

It is an arithmetic number, because the mean of its divisors is an integer number (4115578600).

Almost surely, 2^201202223100 is an apocalyptic number.

201202223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201202223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296321659200).

201202223100 is an abundant number, since it is smaller than the sum of its proper divisors (391441095300).

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

201202223100 is a wasteful number, since it uses less digits than its factorization.

201202223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17820 (or 17813 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 201202223100 its reverse (1322202102), we get a palindrome (202524425202).

The spelling of 201202223100 in words is "two hundred one billion, two hundred two million, two hundred twenty-three thousand, one hundred".