221002212110331 has 32 divisors (see below), whose sum is σ = 307537020495360. Its totient is φ = 140991390457344.

The previous prime is 221002212110311. The next prime is 221002212110347. The reversal of 221002212110331 is 133011212200122.

221002212110331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221002212110331 - 2¹¹ = 221002212108283 is a prime.

It is a super-2 number, since 2×221002212110331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221002212110298 and 221002212110307.

It is not an unprimeable number, because it can be changed into a prime (221002212110311) 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, 365834130 + ... + 366437736.

It is an arithmetic number, because the mean of its divisors is an integer number (9610531890480).

Almost surely, 2^{221002212110331} is an apocalyptic number.

221002212110331 is a deficient number, since it is larger than the sum of its proper divisors (86534808385029).

221002212110331 is a wasteful number, since it uses less digits than its factorization.

221002212110331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640995.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221002212110331 its reverse (133011212200122), we get a palindrome (354013424310453).

The spelling of 221002212110331 in words is "two hundred twenty-one trillion, two billion, two hundred twelve million, one hundred ten thousand, three hundred thirty-one".