20221221012010 has 8 divisors (see below), whose sum is σ = 36398197821636. Its totient is φ = 8088488404800.

The previous prime is 20221221011993. The next prime is 20221221012043. The reversal of 20221221012010 is 1021012212202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18773095180849 + 1448125831161 = 4332793^2 + 1203381^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1011061050591 + ... + 1011061050610.

Almost surely, 2^{20221221012010} is an apocalyptic number.

20221221012010 is a deficient number, since it is larger than the sum of its proper divisors (16176976809626).

20221221012010 is a wasteful number, since it uses less digits than its factorization.

20221221012010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022122101208.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20221221012010 its reverse (1021012212202), we get a palindrome (21242233224212).

It can be divided in two parts, 202 and 21221012010, that added together give a palindrome (21221012212).

The spelling of 20221221012010 in words is "twenty trillion, two hundred twenty-one billion, two hundred twenty-one million, twelve thousand, ten".