20022011121 has 16 divisors (see below), whose sum is σ = 32115507200. Its totient is φ = 10838983248.

The previous prime is 20022011101. The next prime is 20022011143. The reversal of 20022011121 is 12111022002.

It is not a de Polignac number, because 20022011121 - 2⁷ = 20022010993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20022011097 and 20022011106.

It is not an unprimeable number, because it can be changed into a prime (20022011101) 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, 25089841 + ... + 25090638.

It is an arithmetic number, because the mean of its divisors is an integer number (2007219200).

Almost surely, 2^20022011121 is an apocalyptic number.

20022011121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20022011121 is a deficient number, since it is larger than the sum of its proper divisors (12093496079).

20022011121 is a wasteful number, since it uses less digits than its factorization.

20022011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50180508.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20022011121 its reverse (12111022002), we get a palindrome (32133033123).

The spelling of 20022011121 in words is "twenty billion, twenty-two million, eleven thousand, one hundred twenty-one".