20120221222011 has 32 divisors (see below), whose sum is σ = 30089181300480. Its totient is φ = 13286853957888.

The previous prime is 20120221222001. The next prime is 20120221222099. The reversal of 20120221222011 is 11022212202102.

It is a happy number.

20120221222011 is a `hidden beast` number, since 20 + 1 + 202 + 212 + 220 + 11 = 666.

It is not a de Polignac number, because 20120221222011 - 2¹⁴ = 20120221205627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120221222001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30461320 + ... + 31114826.

It is an arithmetic number, because the mean of its divisors is an integer number (940286915640).

Almost surely, 2^{20120221222011} is an apocalyptic number.

20120221222011 is a deficient number, since it is larger than the sum of its proper divisors (9968960078469).

20120221222011 is a wasteful number, since it uses less digits than its factorization.

20120221222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664280 (or 664274 counting only the distinct ones).

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

Adding to 20120221222011 its reverse (11022212202102), we get a palindrome (31142433424113).

The spelling of 20120221222011 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, eleven".