20021222020111 has 8 divisors (see below), whose sum is σ = 21590973963104. Its totient is φ = 18455706925920.

The previous prime is 20021222020097. The next prime is 20021222020133. The reversal of 20021222020111 is 11102022212002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021222020111 - 2²¹ = 20021219922959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021222026111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059202380 + ... + 1059221281.

It is an arithmetic number, because the mean of its divisors is an integer number (2698871745388).

Almost surely, 2^{20021222020111} is an apocalyptic number.

20021222020111 is a deficient number, since it is larger than the sum of its proper divisors (1569751942993).

20021222020111 is a wasteful number, since it uses less digits than its factorization.

20021222020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118424401.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021222020111 its reverse (11102022212002), we get a palindrome (31123244232113).

The spelling of 20021222020111 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, twenty thousand, one hundred eleven".