201222311400 has 192 divisors, whose sum is σ = 756108302400. Its totient is φ = 48781152000.

The previous prime is 201222311399. The next prime is 201222311429. The reversal of 201222311400 is 4113222102.

It is a happy number.

201222311400 is a `hidden beast` number, since 20 + 12 + 2 + 231 + 1 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1634391 + ... + 1753190.

It is an arithmetic number, because the mean of its divisors is an integer number (3938064075).

Almost surely, 2^201222311400 is an apocalyptic number.

201222311400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201222311400 is an abundant number, since it is smaller than the sum of its proper divisors (554885991000).

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

201222311400 is a wasteful number, since it uses less digits than its factorization.

201222311400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387617 (or 3387602 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 201222311400 its reverse (4113222102), we get a palindrome (205335533502).

The spelling of 201222311400 in words is "two hundred one billion, two hundred twenty-two million, three hundred eleven thousand, four hundred".