20012122090 has 16 divisors (see below), whose sum is σ = 36632360160. Its totient is φ = 7869173200.

The previous prime is 20012122073. The next prime is 20012122103. The reversal of 20012122090 is 9022121002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16958836 + ... + 16960015.

It is an arithmetic number, because the mean of its divisors is an integer number (2289522510).

Almost surely, 2^20012122090 is an apocalyptic number.

20012122090 is a deficient number, since it is larger than the sum of its proper divisors (16620238070).

20012122090 is a wasteful number, since it uses less digits than its factorization.

20012122090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33918917.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20012122090 its reverse (9022121002), we get a palindrome (29034243092).

The spelling of 20012122090 in words is "twenty billion, twelve million, one hundred twenty-two thousand, ninety".