22220212121211 has 16 divisors (see below), whose sum is σ = 32382153757184. Its totient is φ = 13469887484064.

The previous prime is 22220212121183. The next prime is 22220212121221. The reversal of 22220212121211 is 11212121202222.

It is not a de Polignac number, because 22220212121211 - 2⁵ = 22220212121179 is a prime.

It is a super-2 number, since 2×22220212121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22220212121221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4251855811 + ... + 4251861036.

It is an arithmetic number, because the mean of its divisors is an integer number (2023884609824).

Almost surely, 2^{22220212121211} is an apocalyptic number.

22220212121211 is a deficient number, since it is larger than the sum of its proper divisors (10161941635973).

22220212121211 is a wasteful number, since it uses less digits than its factorization.

22220212121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8503716930.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22220212121211 its reverse (11212121202222), we get a palindrome (33432333323433).

The spelling of 22220212121211 in words is "twenty-two trillion, two hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, two hundred eleven".