213122003331 has 16 divisors (see below), whose sum is σ = 284582239488. Its totient is φ = 141871644000.

The previous prime is 213122003287. The next prime is 213122003407. The reversal of 213122003331 is 133300221312.

It is not a de Polignac number, because 213122003331 - 2³¹ = 210974519683 is a prime.

It is a super-2 number, since 2×213122003331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213122003298 and 213122003307.

It is not an unprimeable number, because it can be changed into a prime (213122003131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12274306 + ... + 12291656.

It is an arithmetic number, because the mean of its divisors is an integer number (17786389968).

Almost surely, 2^213122003331 is an apocalyptic number.

213122003331 is a deficient number, since it is larger than the sum of its proper divisors (71460236157).

213122003331 is a wasteful number, since it uses less digits than its factorization.

213122003331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23162.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 213122003331 its reverse (133300221312), we get a palindrome (346422224643).

The spelling of 213122003331 in words is "two hundred thirteen billion, one hundred twenty-two million, three thousand, three hundred thirty-one".