1020221192 has 8 divisors (see below), whose sum is σ = 1912914750. Its totient is φ = 510110592.

The previous prime is 1020221179. The next prime is 1020221231. The reversal of 1020221192 is 2911220201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 930616036 + 89605156 = 30506^2 + 9466^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63763817 + ... + 63763832.

Almost surely, 2^1020221192 is an apocalyptic number.

It is an amenable number.

1020221192 is a deficient number, since it is larger than the sum of its proper divisors (892693558).

1020221192 is a wasteful number, since it uses less digits than its factorization.

1020221192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127527655 (or 127527651 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1020221192 is about 31940.9015527114. The cubic root of 1020221192 is about 1006.6954679907.

Adding to 1020221192 its reverse (2911220201), we get a palindrome (3931441393).

The spelling of 1020221192 in words is "one billion, twenty million, two hundred twenty-one thousand, one hundred ninety-two".