21421114002 has 24 divisors (see below), whose sum is σ = 46529337036. Its totient is φ = 7122383136.

The previous prime is 21421113869. The next prime is 21421114031. The reversal of 21421114002 is 20041112412.

It can be written as a sum of positive squares in 2 ways, for example, as 20569583241 + 851530761 = 143421^2 + 29181^2 .

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 11 ways as a sum of consecutive naturals, for example, 1491673 + ... + 1505964.

Almost surely, 2^21421114002 is an apocalyptic number.

21421114002 is an abundant number, since it is smaller than the sum of its proper divisors (25108223034).

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

21421114002 is a wasteful number, since it uses less digits than its factorization.

21421114002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998042 (or 2998039 counting only the distinct ones).

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

Adding to 21421114002 its reverse (20041112412), we get a palindrome (41462226414).

The spelling of 21421114002 in words is "twenty-one billion, four hundred twenty-one million, one hundred fourteen thousand, two".