21222212021002 has 16 divisors (see below), whose sum is σ = 32410286927424. Its totient is φ = 10419973900000.

The previous prime is 21222212020901. The next prime is 21222212021053. The reversal of 21222212021002 is 20012021222212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297677899 + ... + 297749182.

It is an arithmetic number, because the mean of its divisors is an integer number (2025642932964).

Almost surely, 2^{21222212021002} is an apocalyptic number.

21222212021002 is a deficient number, since it is larger than the sum of its proper divisors (11188074906422).

21222212021002 is a wasteful number, since it uses less digits than its factorization.

21222212021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595427405.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21222212021002 its reverse (20012021222212), we get a palindrome (41234233243214).

The spelling of 21222212021002 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred twelve million, twenty-one thousand, two".