20021211020222 has 16 divisors (see below), whose sum is σ = 30540097911312. Its totient is φ = 9841349958720.

The previous prime is 20021211020201. The next prime is 20021211020243. The reversal of 20021211020222 is 22202011212002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20021211020201) and next prime (20021211020243).

It is a self number, because there is not a number n which added to its sum of digits gives 20021211020222.

It is a congruent number.

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, 42659528 + ... + 43126299.

It is an arithmetic number, because the mean of its divisors is an integer number (1908756119457).

Almost surely, 2^{20021211020222} is an apocalyptic number.

20021211020222 is a deficient number, since it is larger than the sum of its proper divisors (10518886891090).

20021211020222 is a wasteful number, since it uses less digits than its factorization.

20021211020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85787803.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20021211020222 its reverse (22202011212002), we get a palindrome (42223222232224).

The spelling of 20021211020222 in words is "twenty trillion, twenty-one billion, two hundred eleven million, twenty thousand, two hundred twenty-two".