20021120201222 has 32 divisors (see below), whose sum is σ = 34333114152960. Its totient is φ = 8577682139520.

The previous prime is 20021120201197. The next prime is 20021120201231. The reversal of 20021120201222 is 22210202112002.

It is a happy number.

It is a super-2 number, since 2×20021120201222² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20021120201222.

It is a congruent number.

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, 752915147 + ... + 752941737.

It is an arithmetic number, because the mean of its divisors is an integer number (1072909817280).

Almost surely, 2^{20021120201222} is an apocalyptic number.

20021120201222 is a deficient number, since it is larger than the sum of its proper divisors (14311993951738).

20021120201222 is a wasteful number, since it uses less digits than its factorization.

20021120201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42116.

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

Adding to 20021120201222 its reverse (22210202112002), we get a palindrome (42231322313224).

The spelling of 20021120201222 in words is "twenty trillion, twenty-one billion, one hundred twenty million, two hundred one thousand, two hundred twenty-two".