20221221122002 has 16 divisors (see below), whose sum is σ = 30351378279672. Its totient is φ = 10104096522240.

The previous prime is 20221221121999. The next prime is 20221221122017. The reversal of 20221221122002 is 20022112212202.

It can be written as a sum of positive squares in 4 ways, for example, as 11322747175041 + 8898473946961 = 3364929^2 + 2983031^2 .

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, 27034002 + ... + 27771922.

Almost surely, 2^{20221221122002} is an apocalyptic number.

20221221122002 is a deficient number, since it is larger than the sum of its proper divisors (10130157157670).

20221221122002 is a wasteful number, since it uses less digits than its factorization.

20221221122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746733.

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

Adding to 20221221122002 its reverse (20022112212202), we get a palindrome (40243333334204).

The spelling of 20221221122002 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, two".