20122111222010 has 32 divisors (see below), whose sum is σ = 41468373532800. Its totient is φ = 6886623534912.

The previous prime is 20122111222001. The next prime is 20122111222067. The reversal of 20122111222010 is 1022211122102.

It is a self number, because there is not a number n which added to its sum of digits gives 20122111222010.

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, 258002960 + ... + 258080939.

It is an arithmetic number, because the mean of its divisors is an integer number (1295886672900).

Almost surely, 2^{20122111222010} is an apocalyptic number.

20122111222010 is an abundant number, since it is smaller than the sum of its proper divisors (21346262310790).

20122111222010 is a wasteful number, since it uses less digits than its factorization.

20122111222010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516084470.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20122111222010 its reverse (1022211122102), we get a palindrome (21144322344112).

The spelling of 20122111222010 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, ten".