21230121114 has 32 divisors (see below), whose sum is σ = 47595565440. Its totient is φ = 7014079296.

The previous prime is 21230121037. The next prime is 21230121137. The reversal of 21230121114 is 41112103212.

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 15 ways as a sum of consecutive naturals, for example, 1733502 + ... + 1745705.

It is an arithmetic number, because the mean of its divisors is an integer number (1487361420).

Almost surely, 2^21230121114 is an apocalyptic number.

21230121114 is an abundant number, since it is smaller than the sum of its proper divisors (26365444326).

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

21230121114 is a wasteful number, since it uses less digits than its factorization.

21230121114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479331 (or 3479325 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21230121114 its reverse (41112103212), we get a palindrome (62342224326).

The spelling of 21230121114 in words is "twenty-one billion, two hundred thirty million, one hundred twenty-one thousand, one hundred fourteen".