212121341031 has 12 divisors (see below), whose sum is σ = 300444069032. Its totient is φ = 133095742848.

The previous prime is 212121340943. The next prime is 212121341051. The reversal of 212121341031 is 130143121212.

It is not a de Polignac number, because 212121341031 - 2²² = 212117146727 is a prime.

It is a super-2 number, since 2×212121341031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212121340989 and 212121341007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212121341051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122329780 + ... + 122331513.

Almost surely, 2^212121341031 is an apocalyptic number.

212121341031 is a deficient number, since it is larger than the sum of its proper divisors (88322728001).

212121341031 is a wasteful number, since it uses less digits than its factorization.

212121341031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244661330 (or 244661313 counting only the distinct ones).

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

Adding to 212121341031 its reverse (130143121212), we get a palindrome (342264462243).

The spelling of 212121341031 in words is "two hundred twelve billion, one hundred twenty-one million, three hundred forty-one thousand, thirty-one".