1020222461 has 6 divisors (see below), whose sum is σ = 1076744862. Its totient is φ = 966526200.

The previous prime is 1020222419. The next prime is 1020222473. The reversal of 1020222461 is 1642220201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 889828900 + 130393561 = 29830^2 + 11419^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1020222461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020222491) 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, 1412690 + ... + 1413411.

It is an arithmetic number, because the mean of its divisors is an integer number (179457477).

Almost surely, 2^1020222461 is an apocalyptic number.

It is an amenable number.

1020222461 is a deficient number, since it is larger than the sum of its proper divisors (56522401).

1020222461 is an equidigital number, since it uses as much as digits as its factorization.

1020222461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826139 (or 2826120 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1020222461 is about 31940.9214175171. The cubic root of 1020222461 is about 1006.6958853825.

Adding to 1020222461 its reverse (1642220201), we get a palindrome (2662442662).

The spelling of 1020222461 in words is "one billion, twenty million, two hundred twenty-two thousand, four hundred sixty-one".