212051121231534 has 32 divisors (see below), whose sum is σ = 457663326650880. Its totient is φ = 65112522445152.

The previous prime is 212051121231403. The next prime is 212051121231557. The reversal of 212051121231534 is 435132121150212.

It is a junction number, because it is equal to n+sod(n) for n = 212051121231495 and 212051121231504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2791136674 + ... + 2791212645.

It is an arithmetic number, because the mean of its divisors is an integer number (14301978957840).

Almost surely, 2^{212051121231534} is an apocalyptic number.

212051121231534 is an abundant number, since it is smaller than the sum of its proper divisors (245612205419346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212051121231534 is a wasteful number, since it uses less digits than its factorization.

212051121231534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5582349824.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 212051121231534 its reverse (435132121150212), we get a palindrome (647183242381746).

The spelling of 212051121231534 in words is "two hundred twelve trillion, fifty-one billion, one hundred twenty-one million, two hundred thirty-one thousand, five hundred thirty-four".