1000020221198 has 48 divisors (see below), whose sum is σ = 1624405262064. Its totient is φ = 461504010240.

The previous prime is 1000020221197. The next prime is 1000020221269. The reversal of 1000020221198 is 8911220200001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020221197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11839865 + ... + 11924027.

It is an arithmetic number, because the mean of its divisors is an integer number (33841776293).

Almost surely, 2^{1000020221198} is an apocalyptic number.

1000020221198 is a deficient number, since it is larger than the sum of its proper divisors (624385040866).

1000020221198 is a wasteful number, since it uses less digits than its factorization.

1000020221198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84597 (or 84580 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

Adding to 1000020221198 its reverse (8911220200001), we get a palindrome (9911240421199).

The spelling of 1000020221198 in words is "one trillion, twenty million, two hundred twenty-one thousand, one hundred ninety-eight".