21114214002 has 128 divisors (see below), whose sum is σ = 54079979520. Its totient is φ = 5981532480.

The previous prime is 21114214001. The next prime is 21114214031. The reversal of 21114214002 is 20041241112.

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

It is not an unprimeable number, because it can be changed into a prime (21114214001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39027852 + ... + 39028392.

It is an arithmetic number, because the mean of its divisors is an integer number (422499840).

Almost surely, 2^21114214002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114214002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27039989760).

21114214002 is an abundant number, since it is smaller than the sum of its proper divisors (32965765518).

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

21114214002 is a wasteful number, since it uses less digits than its factorization.

21114214002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21114214002 its reverse (20041241112), we get a palindrome (41155455114).

The spelling of 21114214002 in words is "twenty-one billion, one hundred fourteen million, two hundred fourteen thousand, two".