221442211240 has 16 divisors (see below), whose sum is σ = 498244975380. Its totient is φ = 88576884480.

The previous prime is 221442211231. The next prime is 221442211337. The reversal of 221442211240 is 42112244122.

It can be written as a sum of positive squares in 2 ways, for example, as 221138824516 + 303386724 = 470254^2 + 17418^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768027601 + ... + 2768027680.

Almost surely, 2^221442211240 is an apocalyptic number.

221442211240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221442211240 is an abundant number, since it is smaller than the sum of its proper divisors (276802764140).

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

221442211240 is a wasteful number, since it uses less digits than its factorization.

221442211240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536055292 (or 5536055288 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 221442211240 its reverse (42112244122), we get a palindrome (263554455362).

The spelling of 221442211240 in words is "two hundred twenty-one billion, four hundred forty-two million, two hundred eleven thousand, two hundred forty".