20121212122022 has 32 divisors (see below), whose sum is σ = 33467827034880. Its totient is φ = 8996354788320.

The previous prime is 20121212121979. The next prime is 20121212122027. The reversal of 20121212122022 is 22022121212102.

It is a junction number, because it is equal to n+sod(n) for n = 20121212121985 and 20121212122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121212122027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23641418 + ... + 24477725.

It is an arithmetic number, because the mean of its divisors is an integer number (1045869594840).

Almost surely, 2^{20121212122022} is an apocalyptic number.

20121212122022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20121212122022 is a deficient number, since it is larger than the sum of its proper divisors (13346614912858).

20121212122022 is a wasteful number, since it uses less digits than its factorization.

20121212122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48119468.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20121212122022 its reverse (22022121212102), we get a palindrome (42143333334124).

The spelling of 20121212122022 in words is "twenty trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twenty-two thousand, twenty-two".