1012021198 has 8 divisors (see below), whose sum is σ = 1540689192. Its totient is φ = 498458136.

The previous prime is 1012021193. The next prime is 1012021201. The reversal of 1012021198 is 8911202101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1012021198³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012021193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3776065 + ... + 3776332.

It is an arithmetic number, because the mean of its divisors is an integer number (192586149).

Almost surely, 2^1012021198 is an apocalyptic number.

1012021198 is a deficient number, since it is larger than the sum of its proper divisors (528667994).

1012021198 is an equidigital number, since it uses as much as digits as its factorization.

1012021198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7552466.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1012021198 is about 31812.2806161394. The cubic root of 1012021198 is about 1003.9911158031.

Adding to 1012021198 its reverse (8911202101), we get a palindrome (9923223299).

It can be divided in two parts, 101202 and 1198, that added together give a square (102400 = 320²).

The spelling of 1012021198 in words is "one billion, twelve million, twenty-one thousand, one hundred ninety-eight".