20123031220101 has 12 divisors (see below), whose sum is σ = 29475989393760. Its totient is φ = 13226405496360.

The previous prime is 20123031220081. The next prime is 20123031220121. The reversal of 20123031220101 is 10102213032102.

20123031220101 is a `hidden beast` number, since 2 + 0 + 1 + 230 + 312 + 20 + 101 = 666.

It is an interprime number because it is at equal distance from previous prime (20123031220081) and next prime (20123031220121).

It is not a de Polignac number, because 20123031220101 - 2²⁵ = 20122997665669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123031220121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15745720191 + ... + 15745721468.

It is an arithmetic number, because the mean of its divisors is an integer number (2456332449480).

Almost surely, 2^{20123031220101} is an apocalyptic number.

It is an amenable number.

20123031220101 is a deficient number, since it is larger than the sum of its proper divisors (9352958173659).

20123031220101 is a wasteful number, since it uses less digits than its factorization.

20123031220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31491441736 (or 31491441733 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20123031220101 its reverse (10102213032102), we get a palindrome (30225244252203).

The spelling of 20123031220101 in words is "twenty trillion, one hundred twenty-three billion, thirty-one million, two hundred twenty thousand, one hundred one".