22061221011 has 48 divisors (see below), whose sum is σ = 35382821760. Its totient is φ = 13181736960.

The previous prime is 22061221003. The next prime is 22061221027. The reversal of 22061221011 is 11012216022.

22061221011 is a `hidden beast` number, since 2 + 20 + 612 + 21 + 0 + 11 = 666.

It is not a de Polignac number, because 22061221011 - 2³ = 22061221003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22061221051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 289846 + ... + 357956.

It is an arithmetic number, because the mean of its divisors is an integer number (737142120).

Almost surely, 2^22061221011 is an apocalyptic number.

22061221011 is a deficient number, since it is larger than the sum of its proper divisors (13321600749).

22061221011 is a wasteful number, since it uses less digits than its factorization.

22061221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68236 (or 68233 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 22061221011 its reverse (11012216022), we get a palindrome (33073437033).

The spelling of 22061221011 in words is "twenty-two billion, sixty-one million, two hundred twenty-one thousand, eleven".