20110122012101 has 16 divisors (see below), whose sum is σ = 23282450327808. Its totient is φ = 17166783513600.

The previous prime is 20110122012077. The next prime is 20110122012121. The reversal of 20110122012101 is 10121022101102.

It is a cyclic number.

It is not a de Polignac number, because 20110122012101 - 2⁴² = 15712075500997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110122012121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124100045 + ... + 124261986.

It is an arithmetic number, because the mean of its divisors is an integer number (1455153145488).

Almost surely, 2^{20110122012101} is an apocalyptic number.

It is an amenable number.

20110122012101 is a deficient number, since it is larger than the sum of its proper divisors (3172328315707).

20110122012101 is a wasteful number, since it uses less digits than its factorization.

20110122012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248362492.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20110122012101 its reverse (10121022101102), we get a palindrome (30231144113203).

The spelling of 20110122012101 in words is "twenty trillion, one hundred ten billion, one hundred twenty-two million, twelve thousand, one hundred one".