20102101220023 has 4 divisors (see below), whose sum is σ = 20102154804880. Its totient is φ = 20102047635168.

The previous prime is 20102101219969. The next prime is 20102101220081. The reversal of 20102101220023 is 32002210120102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102101220023 is a prime.

It is a super-2 number, since 2×20102101220023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102101219979 and 20102101220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102101220083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26225715 + ... + 26981332.

It is an arithmetic number, because the mean of its divisors is an integer number (5025538701220).

Almost surely, 2^{20102101220023} is an apocalyptic number.

20102101220023 is a deficient number, since it is larger than the sum of its proper divisors (53584857).

20102101220023 is an equidigital number, since it uses as much as digits as its factorization.

20102101220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53584856.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20102101220023 its reverse (32002210120102), we get a palindrome (52104311340125).

The spelling of 20102101220023 in words is "twenty trillion, one hundred two billion, one hundred one million, two hundred twenty thousand, twenty-three".