20110122221002 has 16 divisors (see below), whose sum is σ = 33215019203232. Its totient is φ = 9055535068720.

The previous prime is 20110122220949. The next prime is 20110122221003. The reversal of 20110122221002 is 20012222101102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20110122221003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4271476453 + ... + 4271481160.

It is an arithmetic number, because the mean of its divisors is an integer number (2075938700202).

Almost surely, 2^{20110122221002} is an apocalyptic number.

20110122221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20110122221002 is a deficient number, since it is larger than the sum of its proper divisors (13104896982230).

20110122221002 is a wasteful number, since it uses less digits than its factorization.

20110122221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542957733.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20110122221002 its reverse (20012222101102), we get a palindrome (40122344322104).

The spelling of 20110122221002 in words is "twenty trillion, one hundred ten billion, one hundred twenty-two million, two hundred twenty-one thousand, two".