20210120221222 has 4 divisors (see below), whose sum is σ = 30315180331836. Its totient is φ = 10105060110610.

The previous prime is 20210120221103. The next prime is 20210120221229. The reversal of 20210120221222 is 22212202101202.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20210120221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210120221229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5052530055304 + ... + 5052530055307.

It is an arithmetic number, because the mean of its divisors is an integer number (7578795082959).

Almost surely, 2^{20210120221222} is an apocalyptic number.

20210120221222 is a deficient number, since it is larger than the sum of its proper divisors (10105060110614).

20210120221222 is a wasteful number, since it uses less digits than its factorization.

20210120221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105060110613.

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

Adding to 20210120221222 its reverse (22212202101202), we get a palindrome (42422322322424).

The spelling of 20210120221222 in words is "twenty trillion, two hundred ten billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty-two".