21123002312114 has 4 divisors (see below), whose sum is σ = 31684503468174. Its totient is φ = 10561501156056.

The previous prime is 21123002312081. The next prime is 21123002312147. The reversal of 21123002312114 is 41121320032112.

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

It is an interprime number because it is at equal distance from previous prime (21123002312081) and next prime (21123002312147).

It can be written as a sum of positive squares in only one way, i.e., 11382155325025 + 9740846987089 = 3373745^2 + 3121033^2 .

It is a super-2 number, since 2×21123002312114² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21123002312114.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280750578027 + ... + 5280750578030.

Almost surely, 2^{21123002312114} is an apocalyptic number.

21123002312114 is a deficient number, since it is larger than the sum of its proper divisors (10561501156060).

21123002312114 is a wasteful number, since it uses less digits than its factorization.

21123002312114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561501156059.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21123002312114 its reverse (41121320032112), we get a palindrome (62244322344226).

The spelling of 21123002312114 in words is "twenty-one trillion, one hundred twenty-three billion, two million, three hundred twelve thousand, one hundred fourteen".