221222333000 has 32 divisors (see below), whose sum is σ = 517660261560. Its totient is φ = 88488932800.

The previous prime is 221222332951. The next prime is 221222333069. The reversal of 221222333000 is 333222122.

It can be written as a sum of positive squares in 4 ways, for example, as 134693404036 + 86528928964 = 367006^2 + 294158^2 .

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, 110610167 + ... + 110612166.

Almost surely, 2^221222333000 is an apocalyptic number.

221222333000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222333000 is an abundant number, since it is smaller than the sum of its proper divisors (296437928560).

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

221222333000 is a wasteful number, since it uses less digits than its factorization.

221222333000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221222354 (or 221222340 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 221222333000 its reverse (333222122), we get a palindrome (221555555122).

The spelling of 221222333000 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred thirty-three thousand".