20002202121 has 16 divisors (see below), whose sum is σ = 29444647680. Its totient is φ = 11976490320.

The previous prime is 20002202119. The next prime is 20002202123. The reversal of 20002202121 is 12120220002.

It is an interprime number because it is at equal distance from previous prime (20002202119) and next prime (20002202123).

It is not a de Polignac number, because 20002202121 - 2¹ = 20002202119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002202097 and 20002202106.

It is not an unprimeable number, because it can be changed into a prime (20002202123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3648631 + ... + 3654108.

It is an arithmetic number, because the mean of its divisors is an integer number (1840290480).

Almost surely, 2^20002202121 is an apocalyptic number.

It is an amenable number.

20002202121 is a deficient number, since it is larger than the sum of its proper divisors (9442445559).

20002202121 is a wasteful number, since it uses less digits than its factorization.

20002202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302836.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20002202121 its reverse (12120220002), we get a palindrome (32122422123).

The spelling of 20002202121 in words is "twenty billion, two million, two hundred two thousand, one hundred twenty-one".