43213102121 has 16 divisors (see below), whose sum is σ = 51764772864. Its totient is φ = 35270470224.

The previous prime is 43213102057. The next prime is 43213102193. The reversal of 43213102121 is 12120131234.

43213102121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43213102121 - 2⁶ = 43213102057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43213102093 and 43213102102.

It is not an unprimeable number, because it can be changed into a prime (43213105121) 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, 565901 + ... + 637706.

It is an arithmetic number, because the mean of its divisors is an integer number (3235298304).

Almost surely, 2^43213102121 is an apocalyptic number.

It is an amenable number.

43213102121 is a deficient number, since it is larger than the sum of its proper divisors (8551670743).

43213102121 is a wasteful number, since it uses less digits than its factorization.

43213102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203860.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 43213102121 its reverse (12120131234), we get a palindrome (55333233355).

The spelling of 43213102121 in words is "forty-three billion, two hundred thirteen million, one hundred two thousand, one hundred twenty-one".