20210121020222 has 64 divisors (see below), whose sum is σ = 34864011394560. Its totient is φ = 8607159052800.

The previous prime is 20210121020149. The next prime is 20210121020251. The reversal of 20210121020222 is 22202012101202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20210121020222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2473392197 + ... + 2473400367.

It is an arithmetic number, because the mean of its divisors is an integer number (544750178040).

Almost surely, 2^{20210121020222} is an apocalyptic number.

20210121020222 is a deficient number, since it is larger than the sum of its proper divisors (14653890374338).

20210121020222 is a wasteful number, since it uses less digits than its factorization.

20210121020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10097.

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

Adding to 20210121020222 its reverse (22202012101202), we get a palindrome (42412133121424).

The spelling of 20210121020222 in words is "twenty trillion, two hundred ten billion, one hundred twenty-one million, twenty thousand, two hundred twenty-two".