21002214102 has 16 divisors (see below), whose sum is σ = 42006455472. Its totient is φ = 7000400160.

The previous prime is 21002214061. The next prime is 21002214113. The reversal of 21002214102 is 20141220012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72708 + ... + 217464.

It is an arithmetic number, because the mean of its divisors is an integer number (2625403467).

Almost surely, 2^21002214102 is an apocalyptic number.

21002214102 is an abundant number, since it is smaller than the sum of its proper divisors (21004241370).

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

21002214102 is a wasteful number, since it uses less digits than its factorization.

21002214102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168943.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21002214102 its reverse (20141220012), we get a palindrome (41143434114).

The spelling of 21002214102 in words is "twenty-one billion, two million, two hundred fourteen thousand, one hundred two".