20202021221222 has 4 divisors (see below), whose sum is σ = 30303031831836. Its totient is φ = 10101010610610.

The previous prime is 20202021221197. The next prime is 20202021221233. The reversal of 20202021221222 is 22212212020202.

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

It is a super-2 number, since 2×20202021221222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20202021221194 and 20202021221203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050505305304 + ... + 5050505305307.

It is an arithmetic number, because the mean of its divisors is an integer number (7575757957959).

Almost surely, 2^{20202021221222} is an apocalyptic number.

20202021221222 is a deficient number, since it is larger than the sum of its proper divisors (10101010610614).

20202021221222 is a wasteful number, since it uses less digits than its factorization.

20202021221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101010610613.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20202021221222 its reverse (22212212020202), we get a palindrome (42414233241424).

The spelling of 20202021221222 in words is "twenty trillion, two hundred two billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".