22012120021211 has 8 divisors (see below), whose sum is σ = 24058787727744. Its totient is φ = 20048989772160.

The previous prime is 22012120021169. The next prime is 22012120021217. The reversal of 22012120021211 is 11212002121022.

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 22012120021211 - 2²⁶ = 22012052912347 is a prime.

It is a super-5 number, since 5×22012120021211⁵ (a number of 68 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22012120021211.

It is not an unprimeable number, because it can be changed into a prime (22012120021217) 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, 20884363820 + ... + 20884364873.

It is an arithmetic number, because the mean of its divisors is an integer number (3007348465968).

Almost surely, 2^{22012120021211} is an apocalyptic number.

22012120021211 is a deficient number, since it is larger than the sum of its proper divisors (2046667706533).

22012120021211 is a wasteful number, since it uses less digits than its factorization.

22012120021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41768728741.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22012120021211 its reverse (11212002121022), we get a palindrome (33224122142233).

The spelling of 22012120021211 in words is "twenty-two trillion, twelve billion, one hundred twenty million, twenty-one thousand, two hundred eleven".