21022001201122 has 8 divisors (see below), whose sum is σ = 31536676574172. Its totient is φ = 10509775676400.

The previous prime is 21022001201111. The next prime is 21022001201153. The reversal of 21022001201122 is 22110210022012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15014997256561 + 6007003944561 = 3874919^2 + 2450919^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21022001201096 and 21022001201105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612440629 + ... + 612474952.

Almost surely, 2^{21022001201122} is an apocalyptic number.

21022001201122 is a deficient number, since it is larger than the sum of its proper divisors (10514675373050).

21022001201122 is a wasteful number, since it uses less digits than its factorization.

21022001201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224924164.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21022001201122 its reverse (22110210022012), we get a palindrome (43132211223134).

The spelling of 21022001201122 in words is "twenty-one trillion, twenty-two billion, one million, two hundred one thousand, one hundred twenty-two".