21220102201002 has 64 divisors (see below), whose sum is σ = 44827429536000. Its totient is φ = 6683175088128.

The previous prime is 21220102200991. The next prime is 21220102201021. The reversal of 21220102201002 is 20010220102212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11536374 + ... + 13248702.

It is an arithmetic number, because the mean of its divisors is an integer number (700428586500).

Almost surely, 2^{21220102201002} is an apocalyptic number.

21220102201002 is an abundant number, since it is smaller than the sum of its proper divisors (23607327334998).

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

21220102201002 is a wasteful number, since it uses less digits than its factorization.

21220102201002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713455.

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

Adding to 21220102201002 its reverse (20010220102212), we get a palindrome (41230322303214).

The spelling of 21220102201002 in words is "twenty-one trillion, two hundred twenty billion, one hundred two million, two hundred one thousand, two".