2001220101194 has 32 divisors (see below), whose sum is σ = 3319638759360. Its totient is φ = 900767409408.

The previous prime is 2001220101151. The next prime is 2001220101217. The reversal of 2001220101194 is 4911010221002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13407092 + ... + 13555535.

It is an arithmetic number, because the mean of its divisors is an integer number (103738711230).

Almost surely, 2^{2001220101194} is an apocalyptic number.

2001220101194 is a deficient number, since it is larger than the sum of its proper divisors (1318418658166).

2001220101194 is a wasteful number, since it uses less digits than its factorization.

2001220101194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26962742.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 2001220101194 its reverse (4911010221002), we get a palindrome (6912230322196).

The spelling of 2001220101194 in words is "two trillion, one billion, two hundred twenty million, one hundred one thousand, one hundred ninety-four".