20021222022111 has 48 divisors (see below), whose sum is σ = 30193776138240. Its totient is φ = 12769608600000.

The previous prime is 20021222022107. The next prime is 20021222022133. The reversal of 20021222022111 is 11122022212002.

It is a happy number.

20021222022111 is a `hidden beast` number, since 2 + 0 + 0 + 212 + 220 + 221 + 11 = 666.

It is not a de Polignac number, because 20021222022111 - 2² = 20021222022107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021222022811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18030886 + ... + 19109036.

It is an arithmetic number, because the mean of its divisors is an integer number (629037002880).

Almost surely, 2^{20021222022111} is an apocalyptic number.

20021222022111 is a deficient number, since it is larger than the sum of its proper divisors (10172554116129).

20021222022111 is a wasteful number, since it uses less digits than its factorization.

20021222022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078948 (or 1078945 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20021222022111 its reverse (11122022212002), we get a palindrome (31143244234113).

The spelling of 20021222022111 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, twenty-two thousand, one hundred eleven".