20012112212122 has 32 divisors (see below), whose sum is σ = 30747177586944. Its totient is φ = 9765954912000.

The previous prime is 20012112212111. The next prime is 20012112212167. The reversal of 20012112212122 is 22121221121002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012112212122.

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, 42135372 + ... + 42607672.

It is an arithmetic number, because the mean of its divisors is an integer number (960849299592).

Almost surely, 2^{20012112212122} is an apocalyptic number.

20012112212122 is a deficient number, since it is larger than the sum of its proper divisors (10735065374822).

20012112212122 is a wasteful number, since it uses less digits than its factorization.

20012112212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475374.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20012112212122 its reverse (22121221121002), we get a palindrome (42133333333124).

The spelling of 20012112212122 in words is "twenty trillion, twelve billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-two".