2220101998 has 4 divisors (see below), whose sum is σ = 3330153000. Its totient is φ = 1110050998.

The previous prime is 2220101993. The next prime is 2220101999. The reversal of 2220101998 is 8991010222.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220101993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555025498 + ... + 555025501.

It is an arithmetic number, because the mean of its divisors is an integer number (832538250).

Almost surely, 2^2220101998 is an apocalyptic number.

2220101998 is a deficient number, since it is larger than the sum of its proper divisors (1110051002).

2220101998 is a wasteful number, since it uses less digits than its factorization.

2220101998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110051001.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 2220101998 is about 47117.9583386207. The cubic root of 2220101998 is about 1304.5407284694.

The spelling of 2220101998 in words is "two billion, two hundred twenty million, one hundred one thousand, nine hundred ninety-eight".