21221012022002 has 32 divisors (see below), whose sum is σ = 34377046437888. Its totient is φ = 9766624303296.

The previous prime is 21221012021977. The next prime is 21221012022011. The reversal of 21221012022002 is 20022021012212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46205648 + ... + 46662660.

It is an arithmetic number, because the mean of its divisors is an integer number (1074282701184).

Almost surely, 2^{21221012022002} is an apocalyptic number.

21221012022002 is a deficient number, since it is larger than the sum of its proper divisors (13156034415886).

21221012022002 is a wasteful number, since it uses less digits than its factorization.

21221012022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462074.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21221012022002 its reverse (20022021012212), we get a palindrome (41243033034214).

The spelling of 21221012022002 in words is "twenty-one trillion, two hundred twenty-one billion, twelve million, twenty-two thousand, two".