221020001220112 has 10 divisors (see below), whose sum is σ = 428226252363998. Its totient is φ = 110510000610048.

The previous prime is 221020001220071. The next prime is 221020001220121. The reversal of 221020001220112 is 211022100020122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 194336536535296 + 26683464684816 = 13940464^2 + 5165604^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 13813750076257 = 221020001220112 / (2 + 2 + 1 + 0 + 2 + 0 + 0 + 0 + 1 + 2 + 2 + 0 + 1 + 1 + 2).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6906875038113 + ... + 6906875038144.

Almost surely, 2^{221020001220112} is an apocalyptic number.

It is an amenable number.

221020001220112 is a deficient number, since it is larger than the sum of its proper divisors (207206251143886).

221020001220112 is a wasteful number, since it uses less digits than its factorization.

221020001220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13813750076265 (or 13813750076259 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221020001220112 its reverse (211022100020122), we get a palindrome (432042101240234).

The spelling of 221020001220112 in words is "two hundred twenty-one trillion, twenty billion, one million, two hundred twenty thousand, one hundred twelve".