22002120210121 has 16 divisors (see below), whose sum is σ = 22777761651840. Its totient is φ = 21227614531200.

The previous prime is 22002120210101. The next prime is 22002120210143. The reversal of 22002120210121 is 12101202120022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22002120210121 - 2⁵ = 22002120210089 is a prime.

It is a super-2 number, since 2×22002120210121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22002120210095 and 22002120210104.

It is not an unprimeable number, because it can be changed into a prime (22002120210101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219639396 + ... + 219739546.

It is an arithmetic number, because the mean of its divisors is an integer number (1423610103240).

Almost surely, 2^{22002120210121} is an apocalyptic number.

It is an amenable number.

22002120210121 is a deficient number, since it is larger than the sum of its proper divisors (775641441719).

22002120210121 is a wasteful number, since it uses less digits than its factorization.

22002120210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105744.

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

Adding to 22002120210121 its reverse (12101202120022), we get a palindrome (34103322330143).

The spelling of 22002120210121 in words is "twenty-two trillion, two billion, one hundred twenty million, two hundred ten thousand, one hundred twenty-one".