22120221111212 has 24 divisors (see below), whose sum is σ = 46568886551040. Its totient is φ = 8981142405840.

The previous prime is 22120221111167. The next prime is 22120221111251. The reversal of 22120221111212 is 21211112202122.

It is a super-3 number, since 3×22120221111212³ (a number of 41 digits) contains 333 as substring.

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, 20789680964 + ... + 20789682027.

It is an arithmetic number, because the mean of its divisors is an integer number (1940370272960).

Almost surely, 2^{22120221111212} is an apocalyptic number.

It is an amenable number.

22120221111212 is an abundant number, since it is smaller than the sum of its proper divisors (24448665439828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22120221111212 is a wasteful number, since it uses less digits than its factorization.

22120221111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41579363021 (or 41579363019 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22120221111212 its reverse (21211112202122), we get a palindrome (43331333313334).

The spelling of 22120221111212 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twelve".