222020021450 has 12 divisors (see below), whose sum is σ = 412957239990. Its totient is φ = 88808008560.

The previous prime is 222020021429. The next prime is 222020021507. The reversal of 222020021450 is 54120020222.

It can be written as a sum of positive squares in 3 ways, for example, as 199389933961 + 22630087489 = 446531^2 + 150433^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2220200165 + ... + 2220200264.

Almost surely, 2^222020021450 is an apocalyptic number.

222020021450 is a deficient number, since it is larger than the sum of its proper divisors (190937218540).

222020021450 is a wasteful number, since it uses less digits than its factorization.

222020021450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440400441 (or 4440400436 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 222020021450 its reverse (54120020222), we get a palindrome (276140041672).

The spelling of 222020021450 in words is "two hundred twenty-two billion, twenty million, twenty-one thousand, four hundred fifty".