20021121122 has 16 divisors (see below), whose sum is σ = 30383068032. Its totient is φ = 9893785200.

The previous prime is 20021121061. The next prime is 20021121137. The reversal of 20021121122 is 22112112002.

It is a junction number, because it is equal to n+sod(n) for n = 20021121097 and 20021121106.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25703 + ... + 201749.

It is an arithmetic number, because the mean of its divisors is an integer number (1898941752).

Almost surely, 2^20021121122 is an apocalyptic number.

20021121122 is a deficient number, since it is larger than the sum of its proper divisors (10361946910).

20021121122 is a wasteful number, since it uses less digits than its factorization.

20021121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176713.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021121122 its reverse (22112112002), we get a palindrome (42133233124).

The spelling of 20021121122 in words is "twenty billion, twenty-one million, one hundred twenty-one thousand, one hundred twenty-two".