20010111001222 has 16 divisors (see below), whose sum is σ = 30588812475552. Its totient is φ = 9813930572160.

The previous prime is 20010111001211. The next prime is 20010111001229. The reversal of 20010111001222 is 22210011101002.

It is a super-2 number, since 2×20010111001222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010111001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22154154 + ... + 23039677.

It is an arithmetic number, because the mean of its divisors is an integer number (1911800779722).

Almost surely, 2^{20010111001222} is an apocalyptic number.

20010111001222 is a deficient number, since it is larger than the sum of its proper divisors (10578701474330).

20010111001222 is a wasteful number, since it uses less digits than its factorization.

20010111001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45198063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20010111001222 its reverse (22210011101002), we get a palindrome (42220122102224).

The spelling of 20010111001222 in words is "twenty trillion, ten billion, one hundred eleven million, one thousand, two hundred twenty-two".