21030121314 has 16 divisors (see below), whose sum is σ = 46733603040. Its totient is φ = 7010040420.

The previous prime is 21030121271. The next prime is 21030121351. The reversal of 21030121314 is 41312103012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194723292 + ... + 194723399.

It is an arithmetic number, because the mean of its divisors is an integer number (2920850190).

Almost surely, 2^21030121314 is an apocalyptic number.

21030121314 is an abundant number, since it is smaller than the sum of its proper divisors (25703481726).

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

21030121314 is a wasteful number, since it uses less digits than its factorization.

21030121314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389446702 (or 389446696 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21030121314 its reverse (41312103012), we get a palindrome (62342224326).

It can be divided in two parts, 2103012 and 1314, that added together give a triangular number (2104326 = T₂₀₅₁).

The spelling of 21030121314 in words is "twenty-one billion, thirty million, one hundred twenty-one thousand, three hundred fourteen".