20121000213023 has 2 divisors, whose sum is σ = 20121000213024. Its totient is φ = 20121000213022.

The previous prime is 20121000212977. The next prime is 20121000213029. The reversal of 20121000213023 is 32031200012102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121000213023 - 2⁶ = 20121000212959 is a prime.

It is a super-2 number, since 2×20121000213023² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20121000212992 and 20121000213010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121000213029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060500106511 + 10060500106512.

It is an arithmetic number, because the mean of its divisors is an integer number (10060500106512).

Almost surely, 2^{20121000213023} is an apocalyptic number.

20121000213023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121000213023 is an equidigital number, since it uses as much as digits as its factorization.

20121000213023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20121000213023 its reverse (32031200012102), we get a palindrome (52152200225125).

The spelling of 20121000213023 in words is "twenty trillion, one hundred twenty-one billion, two hundred thirteen thousand, twenty-three".