20110121011222 has 16 divisors (see below), whose sum is σ = 33233287291344. Its totient is φ = 9050459500000.

The previous prime is 20110121011207. The next prime is 20110121011289. The reversal of 20110121011222 is 22211012101102.

It is a junction number, because it is equal to n+sod(n) for n = 20110121011196 and 20110121011205.

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, 4525227529 + ... + 4525231972.

It is an arithmetic number, because the mean of its divisors is an integer number (2077080455709).

Almost surely, 2^{20110121011222} is an apocalyptic number.

20110121011222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20110121011222 is a deficient number, since it is larger than the sum of its proper divisors (13123166280122).

20110121011222 is a wasteful number, since it uses less digits than its factorization.

20110121011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9050459615.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20110121011222 its reverse (22211012101102), we get a palindrome (42321133112324).

The spelling of 20110121011222 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, two hundred twenty-two".