20001201001222 has 128 divisors (see below), whose sum is σ = 38459822284800. Its totient is φ = 7594262936064.

The previous prime is 20001201001213. The next prime is 20001201001253. The reversal of 20001201001222 is 22210010210002.

It is a happy number.

It is a super-3 number, since 3×20001201001222³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2950461429 + ... + 2950468207.

It is an arithmetic number, because the mean of its divisors is an integer number (300467361600).

Almost surely, 2^{20001201001222} is an apocalyptic number.

20001201001222 is a deficient number, since it is larger than the sum of its proper divisors (18458621283578).

20001201001222 is a wasteful number, since it uses less digits than its factorization.

20001201001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10898.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20001201001222 its reverse (22210010210002), we get a palindrome (42211211211224).

The spelling of 20001201001222 in words is "twenty trillion, one billion, two hundred one million, one thousand, two hundred twenty-two".