20022221003212 has 24 divisors (see below), whose sum is σ = 36274592200896. Its totient is φ = 9663887484288.

The previous prime is 20022221003209. The next prime is 20022221003251. The reversal of 20022221003212 is 21230012222002.

It is a self number, because there is not a number n which added to its sum of digits gives 20022221003212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729446383 + ... + 729473830.

It is an arithmetic number, because the mean of its divisors is an integer number (1511441341704).

Almost surely, 2^{20022221003212} is an apocalyptic number.

It is an amenable number.

20022221003212 is a deficient number, since it is larger than the sum of its proper divisors (16252371197684).

20022221003212 is a wasteful number, since it uses less digits than its factorization.

20022221003212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458920337 (or 1458920335 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20022221003212 its reverse (21230012222002), we get a palindrome (41252233225214).

The spelling of 20022221003212 in words is "twenty trillion, twenty-two billion, two hundred twenty-one million, three thousand, two hundred twelve".