20012100122 has 32 divisors (see below), whose sum is σ = 35500792320. Its totient is φ = 8278220160.

The previous prime is 20012100079. The next prime is 20012100133. The reversal of 20012100122 is 22100121002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738847 + ... + 1750317.

It is an arithmetic number, because the mean of its divisors is an integer number (1109399760).

Almost surely, 2^20012100122 is an apocalyptic number.

20012100122 is a deficient number, since it is larger than the sum of its proper divisors (15488692198).

20012100122 is a wasteful number, since it uses less digits than its factorization.

20012100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15806.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20012100122 its reverse (22100121002), we get a palindrome (42112221124).

The spelling of 20012100122 in words is "twenty billion, twelve million, one hundred thousand, one hundred twenty-two".