20202121201122 has 144 divisors (see below), whose sum is σ = 53569202981112. Its totient is φ = 5479056898560.

The previous prime is 20202121201099. The next prime is 20202121201147. The reversal of 20202121201122 is 22110212120202.

It is a happy number.

20202121201122 is a `hidden beast` number, since 20 + 202 + 121 + 201 + 122 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9188955506241 + 11013165694881 = 3031329^2 + 3318609^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20202121201095 and 20202121201104.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6211413 + ... + 8887400.

Almost surely, 2^{20202121201122} is an apocalyptic number.

20202121201122 is an abundant number, since it is smaller than the sum of its proper divisors (33367081779990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20202121201122 is a wasteful number, since it uses less digits than its factorization.

20202121201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15098913 (or 15098903 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20202121201122 its reverse (22110212120202), we get a palindrome (42312333321324).

The spelling of 20202121201122 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, two hundred one thousand, one hundred twenty-two".