1212432342121 has 24 divisors (see below), whose sum is σ = 1640213634752. Its totient is φ = 872079199200.

The previous prime is 1212432342119. The next prime is 1212432342151.

1212432342121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1212432342121 - 2¹ = 1212432342119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212432342121.

It is not an unprimeable number, because it can be changed into a prime (1212432342101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55044495 + ... + 55066516.

Almost surely, 2^{1212432342121} is an apocalyptic number.

1212432342121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212432342121 is a deficient number, since it is larger than the sum of its proper divisors (427781292631).

1212432342121 is a wasteful number, since it uses less digits than its factorization.

1212432342121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110111053 (or 110111042 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The spelling of 1212432342121 in words is "one trillion, two hundred twelve billion, four hundred thirty-two million, three hundred forty-two thousand, one hundred twenty-one".