20010001222 has 16 divisors (see below), whose sum is σ = 30225047040. Its totient is φ = 9935214912.

The previous prime is 20010001201. The next prime is 20010001267. The reversal of 20010001222 is 22210001002.

It is a junction number, because it is equal to n+sod(n) for n = 20010001199 and 20010001208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118378 + ... + 232450.

It is an arithmetic number, because the mean of its divisors is an integer number (1889065440).

Almost surely, 2^20010001222 is an apocalyptic number.

20010001222 is a deficient number, since it is larger than the sum of its proper divisors (10215045818).

20010001222 is a wasteful number, since it uses less digits than its factorization.

20010001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114687.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20010001222 its reverse (22210001002), we get a palindrome (42220002224).

The spelling of 20010001222 in words is "twenty billion, ten million, one thousand, two hundred twenty-two".