21000123114 has 16 divisors (see below), whose sum is σ = 42792704352. Its totient is φ = 6867964688.

The previous prime is 21000123101. The next prime is 21000123127. The reversal of 21000123114 is 41132100012.

It is an interprime number because it is at equal distance from previous prime (21000123101) and next prime (21000123127).

It is a junction number, because it is equal to n+sod(n) for n = 21000123093 and 21000123102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33018744 + ... + 33019379.

It is an arithmetic number, because the mean of its divisors is an integer number (2674544022).

Almost surely, 2^21000123114 is an apocalyptic number.

21000123114 is an abundant number, since it is smaller than the sum of its proper divisors (21792581238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21000123114 is a wasteful number, since it uses less digits than its factorization.

21000123114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66038181.

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

Adding to 21000123114 its reverse (41132100012), we get a palindrome (62132223126).

The spelling of 21000123114 in words is "twenty-one billion, one hundred twenty-three thousand, one hundred fourteen".