21002213414 has 32 divisors (see below), whose sum is σ = 39209002560. Its totient is φ = 8215206912.

The previous prime is 21002213411. The next prime is 21002213443. The reversal of 21002213414 is 41431220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002213411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632099 + ... + 664494.

It is an arithmetic number, because the mean of its divisors is an integer number (1225281330).

Almost surely, 2^21002213414 is an apocalyptic number.

21002213414 is a deficient number, since it is larger than the sum of its proper divisors (18206789146).

21002213414 is a wasteful number, since it uses less digits than its factorization.

21002213414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296704.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21002213414 its reverse (41431220012), we get a palindrome (62433433426).

The spelling of 21002213414 in words is "twenty-one billion, two million, two hundred thirteen thousand, four hundred fourteen".