22120220021221 has 8 divisors (see below), whose sum is σ = 26767325067840. Its totient is φ = 17844883378368.

The previous prime is 22120220021167. The next prime is 22120220021303. The reversal of 22120220021221 is 12212002202122.

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 22120220021221 - 2⁷ = 22120220021093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120220021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92942100811 + ... + 92942101048.

It is an arithmetic number, because the mean of its divisors is an integer number (3345915633480).

Almost surely, 2^{22120220021221} is an apocalyptic number.

It is an amenable number.

22120220021221 is a deficient number, since it is larger than the sum of its proper divisors (4647105046619).

22120220021221 is a wasteful number, since it uses less digits than its factorization.

22120220021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185884201883.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22120220021221 its reverse (12212002202122), we get a palindrome (34332222223343).

The spelling of 22120220021221 in words is "twenty-two trillion, one hundred twenty billion, two hundred twenty million, twenty-one thousand, two hundred twenty-one".