2202222002121 has 12 divisors (see below), whose sum is σ = 3368104238772. Its totient is φ = 1381786354176.

The previous prime is 2202222002107. The next prime is 2202222002131. The reversal of 2202222002121 is 1212002222022.

2202222002121 is a `hidden beast` number, since 220 + 222 + 200 + 2 + 1 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1830097601721 + 372124400400 = 1352811^2 + 610020^2 .

It is not a de Polignac number, because 2202222002121 - 2²² = 2202217807817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202222002094 and 2202222002103.

It is not an unprimeable number, because it can be changed into a prime (2202222002131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7196803776 + ... + 7196804081.

It is an arithmetic number, because the mean of its divisors is an integer number (280675353231).

Almost surely, 2^{2202222002121} is an apocalyptic number.

It is an amenable number.

2202222002121 is a deficient number, since it is larger than the sum of its proper divisors (1165882236651).

2202222002121 is a wasteful number, since it uses less digits than its factorization.

2202222002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14393607880 (or 14393607877 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2202222002121 its reverse (1212002222022), we get a palindrome (3414224224143).

The spelling of 2202222002121 in words is "two trillion, two hundred two billion, two hundred twenty-two million, two thousand, one hundred twenty-one".