221222413011400 has 24 divisors (see below), whose sum is σ = 514342110251970. Its totient is φ = 88488965204480.

The previous prime is 221222413011377. The next prime is 221222413011401. The reversal of 221222413011400 is 4110314222122.

It can be written as a sum of positive squares in 3 ways, for example, as 95133454235044 + 126088958776356 = 9753638^2 + 11228934^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (221222413011401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553056032329 + ... + 553056032728.

Almost surely, 2^{221222413011400} is an apocalyptic number.

221222413011400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222413011400 is an abundant number, since it is smaller than the sum of its proper divisors (293119697240570).

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

221222413011400 is a wasteful number, since it uses less digits than its factorization.

221222413011400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106112065073 (or 1106112065064 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 221222413011400 its reverse (4110314222122), we get a palindrome (225332727233522).

The spelling of 221222413011400 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, four hundred thirteen million, eleven thousand, four hundred".