2221201001331 has 64 divisors (see below), whose sum is σ = 3624756387840. Its totient is φ = 1335754903680.

The previous prime is 2221201001303. The next prime is 2221201001351. The reversal of 2221201001331 is 1331001021222.

2221201001331 is a `hidden beast` number, since 22 + 212 + 0 + 100 + 1 + 331 = 666.

It is not a de Polignac number, because 2221201001331 - 2²¹ = 2221198904179 is a prime.

It is a super-2 number, since 2×2221201001331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2221201001351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10669446 + ... + 10875636.

It is an arithmetic number, because the mean of its divisors is an integer number (56636818560).

Almost surely, 2^{2221201001331} is an apocalyptic number.

2221201001331 is a deficient number, since it is larger than the sum of its proper divisors (1403555386509).

2221201001331 is a wasteful number, since it uses less digits than its factorization.

2221201001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206913 (or 206907 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2221201001331 its reverse (1331001021222), we get a palindrome (3552202022553).

The spelling of 2221201001331 in words is "two trillion, two hundred twenty-one billion, two hundred one million, one thousand, three hundred thirty-one".