20122121222212 has 12 divisors (see below), whose sum is σ = 35215397232400. Its totient is φ = 10060579155816.

The previous prime is 20122121222209. The next prime is 20122121222221. The reversal of 20122121222212 is 21222212122102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120269778 + ... + 120436969.

Almost surely, 2^{20122121222212} is an apocalyptic number.

It is an amenable number.

20122121222212 is a deficient number, since it is larger than the sum of its proper divisors (15093276010188).

20122121222212 is a wasteful number, since it uses less digits than its factorization.

20122121222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240727650 (or 240727648 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 20122121222212 its reverse (21222212122102), we get a palindrome (41344333344314).

The spelling of 20122121222212 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".