21220101001002 has 8 divisors (see below), whose sum is σ = 42440202002016. Its totient is φ = 7073367000332.

The previous prime is 21220101000983. The next prime is 21220101001051. The reversal of 21220101001002 is 20010010102212.

It is a sphenic number, since it is the product of 3 distinct primes.

21220101001002 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768341750078 + ... + 1768341750089.

It is an arithmetic number, because the mean of its divisors is an integer number (5305025250252).

Almost surely, 2^{21220101001002} is an apocalyptic number.

21220101001002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21220101001002 is a wasteful number, since it uses less digits than its factorization.

21220101001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536683500172.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21220101001002 its reverse (20010010102212), we get a palindrome (41230111103214).

The spelling of 21220101001002 in words is "twenty-one trillion, two hundred twenty billion, one hundred one million, one thousand, two".