20022201112121 has 8 divisors (see below), whose sum is σ = 21581071546440. Its totient is φ = 18466002266112.

The previous prime is 20022201112103. The next prime is 20022201112169. The reversal of 20022201112121 is 12121110222002.

It can be written as a sum of positive squares in 4 ways, for example, as 159232921600 + 19862968190521 = 399040^2 + 4456789^2 .

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 20022201112121 - 2¹⁴ = 20022201095737 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 20022201112121.

It is not an unprimeable number, because it can be changed into a prime (20022201112181) 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, 667881506 + ... + 667911483.

It is an arithmetic number, because the mean of its divisors is an integer number (2697633943305).

Almost surely, 2^{20022201112121} is an apocalyptic number.

It is an amenable number.

20022201112121 is a deficient number, since it is larger than the sum of its proper divisors (1558870434319).

20022201112121 is a wasteful number, since it uses less digits than its factorization.

20022201112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335794155.

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

Adding to 20022201112121 its reverse (12121110222002), we get a palindrome (32143311334123).

The spelling of 20022201112121 in words is "twenty trillion, twenty-two billion, two hundred one million, one hundred twelve thousand, one hundred twenty-one".