20022022111121 has 8 divisors (see below), whose sum is σ = 20563234164840. Its totient is φ = 19480814074368.

The previous prime is 20022022111001. The next prime is 20022022111139. The reversal of 20022022111121 is 12111122022002.

It can be written as a sum of positive squares in 4 ways, for example, as 2114229413521 + 17907792697600 = 1454039^2 + 4231760^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20022022111121 - 2¹⁸ = 20022021848977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20022022111121.

It is not an unprimeable number, because it can be changed into a prime (20022022111181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11018615 + ... + 12706451.

It is an arithmetic number, because the mean of its divisors is an integer number (2570404270605).

Almost surely, 2^{20022022111121} is an apocalyptic number.

It is an amenable number.

20022022111121 is a deficient number, since it is larger than the sum of its proper divisors (541212053719).

20022022111121 is a wasteful number, since it uses less digits than its factorization.

20022022111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008483.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20022022111121 its reverse (12111122022002), we get a palindrome (32133144133123).

The spelling of 20022022111121 in words is "twenty trillion, twenty-two billion, twenty-two million, one hundred eleven thousand, one hundred twenty-one".