20022002121 has 16 divisors (see below), whose sum is σ = 29423153088. Its totient is φ = 12009446400.

The previous prime is 20022002107. The next prime is 20022002167. The reversal of 20022002121 is 12120022002.

It is not a de Polignac number, because 20022002121 - 2⁵ = 20022002089 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20022002097 and 20022002106.

It is not an unprimeable number, because it can be changed into a prime (20022002101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3124260 + ... + 3130661.

It is an arithmetic number, because the mean of its divisors is an integer number (1838947068).

Almost surely, 2^20022002121 is an apocalyptic number.

It is an amenable number.

20022002121 is a deficient number, since it is larger than the sum of its proper divisors (9401150967).

20022002121 is a wasteful number, since it uses less digits than its factorization.

20022002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6255032.

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

Adding to 20022002121 its reverse (12120022002), we get a palindrome (32142024123).

It can be divided in two parts, 20022002 and 121, that multiplied together give a palindrome (2422662242).

The spelling of 20022002121 in words is "twenty billion, twenty-two million, two thousand, one hundred twenty-one".