220221221012 has 36 divisors (see below), whose sum is σ = 424385871840. Its totient is φ = 99917824032.

The previous prime is 220221220957. The next prime is 220221221023. The reversal of 220221221012 is 210122122022.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2720888 + ... + 2800655.

It is an arithmetic number, because the mean of its divisors is an integer number (11788496440).

Almost surely, 2^220221221012 is an apocalyptic number.

It is an amenable number.

220221221012 is a deficient number, since it is larger than the sum of its proper divisors (204164650828).

220221221012 is a wasteful number, since it uses less digits than its factorization.

220221221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521632 (or 5521617 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220221221012 its reverse (210122122022), we get a palindrome (430343343034).

The spelling of 220221221012 in words is "two hundred twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, twelve".