22120202120121 has 144 divisors (see below), whose sum is σ = 39433854620160. Its totient is φ = 11892544796160.

The previous prime is 22120202120113. The next prime is 22120202120129. The reversal of 22120202120121 is 12102120202122.

It is a happy number.

22120202120121 is a `hidden beast` number, since 221 + 2 + 0 + 202 + 120 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (22120202120113) and next prime (22120202120129).

It is not a de Polignac number, because 22120202120121 - 2³ = 22120202120113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22120202120094 and 22120202120103.

It is not an unprimeable number, because it can be changed into a prime (22120202120129) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 452488746 + ... + 452537628.

It is an arithmetic number, because the mean of its divisors is an integer number (273846212640).

Almost surely, 2^{22120202120121} is an apocalyptic number.

22120202120121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22120202120121 is a deficient number, since it is larger than the sum of its proper divisors (17313652500039).

22120202120121 is a wasteful number, since it uses less digits than its factorization.

22120202120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49836 (or 49826 counting only the distinct ones).

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

Adding to 22120202120121 its reverse (12102120202122), we get a palindrome (34222322322243).

The spelling of 22120202120121 in words is "twenty-two trillion, one hundred twenty billion, two hundred two million, one hundred twenty thousand, one hundred twenty-one".