212020101123 has 16 divisors (see below), whose sum is σ = 284846257056. Its totient is φ = 140270987520.

The previous prime is 212020101113. The next prime is 212020101133. The reversal of 212020101123 is 321101020212.

It is an interprime number because it is at equal distance from previous prime (212020101113) and next prime (212020101133).

It is not a de Polignac number, because 212020101123 - 2⁸ = 212020100867 is a prime.

It is a super-2 number, since 2×212020101123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212020101113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1257693 + ... + 1416273.

It is an arithmetic number, because the mean of its divisors is an integer number (17802891066).

Almost surely, 2^212020101123 is an apocalyptic number.

212020101123 is a deficient number, since it is larger than the sum of its proper divisors (72826155933).

212020101123 is a wasteful number, since it uses less digits than its factorization.

212020101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161974.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212020101123 its reverse (321101020212), we get a palindrome (533121121335).

The spelling of 212020101123 in words is "two hundred twelve billion, twenty million, one hundred one thousand, one hundred twenty-three".