20012121211122 has 32 divisors (see below), whose sum is σ = 44473092124800. Its totient is φ = 6670450322064.

The previous prime is 20012121211099. The next prime is 20012121211157. The reversal of 20012121211122 is 22111212121002.

20012121211122 is a `hidden beast` number, since 200 + 12 + 121 + 211 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20012121211095 and 20012121211104.

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, 5713318 + ... + 8524449.

It is an arithmetic number, because the mean of its divisors is an integer number (1389784128900).

Almost surely, 2^{20012121211122} is an apocalyptic number.

20012121211122 is an abundant number, since it is smaller than the sum of its proper divisors (24460970913678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012121211122 is a wasteful number, since it uses less digits than its factorization.

20012121211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14263807 (or 14263801 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20012121211122 its reverse (22111212121002), we get a palindrome (42123333332124).

The spelling of 20012121211122 in words is "twenty trillion, twelve billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twenty-two".