20022212112 has 80 divisors (see below), whose sum is σ = 59128596480. Its totient is φ = 5719142016.

The previous prime is 20022212101. The next prime is 20022212113. The reversal of 20022212112 is 21121222002.

It is a junction number, because it is equal to n+sod(n) for n = 20022212091 and 20022212100.

It is not an unprimeable number, because it can be changed into a prime (20022212113) 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, 2333943 + ... + 2342505.

It is an arithmetic number, because the mean of its divisors is an integer number (739107456).

Almost surely, 2^20022212112 is an apocalyptic number.

It is an amenable number.

20022212112 is an abundant number, since it is smaller than the sum of its proper divisors (39106384368).

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

20022212112 is a wasteful number, since it uses less digits than its factorization.

20022212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540 (or 15534 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20022212112 its reverse (21121222002), we get a palindrome (41143434114).

The spelling of 20022212112 in words is "twenty billion, twenty-two million, two hundred twelve thousand, one hundred twelve".