21201120022022 has 16 divisors (see below), whose sum is σ = 32777191711152. Its totient is φ = 10278561847680.

The previous prime is 21201120021947. The next prime is 21201120022031. The reversal of 21201120022022 is 22022002110212.

It is a happy number.

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, 793085543 + ... + 793112274.

It is an arithmetic number, because the mean of its divisors is an integer number (2048574481947).

Almost surely, 2^{21201120022022} is an apocalyptic number.

21201120022022 is a deficient number, since it is larger than the sum of its proper divisors (11576071689130).

21201120022022 is a wasteful number, since it uses less digits than its factorization.

21201120022022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586198023.

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

Adding to 21201120022022 its reverse (22022002110212), we get a palindrome (43223122132234).

The spelling of 21201120022022 in words is "twenty-one trillion, two hundred one billion, one hundred twenty million, twenty-two thousand, twenty-two".