20202021212122 has 16 divisors (see below), whose sum is σ = 30458597915592. Its totient is φ = 10049161111360.

The previous prime is 20202021212117. The next prime is 20202021212239. The reversal of 20202021212122 is 22121212020202.

It can be written as a sum of positive squares in 4 ways, for example, as 19310830459281 + 891190752841 = 4394409^2 + 944029^2 .

It is a super-2 number, since 2×20202021212122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20202021212122.

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, 5464872 + ... + 8382652.

Almost surely, 2^{20202021212122} is an apocalyptic number.

20202021212122 is a deficient number, since it is larger than the sum of its proper divisors (10256576703470).

20202021212122 is a wasteful number, since it uses less digits than its factorization.

20202021212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935553.

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

Adding to 20202021212122 its reverse (22121212020202), we get a palindrome (42323233232324).

The spelling of 20202021212122 in words is "twenty trillion, two hundred two billion, twenty-one million, two hundred twelve thousand, one hundred twenty-two".