121421434034 has 4 divisors (see below), whose sum is σ = 182132151054. Its totient is φ = 60710717016.

The previous prime is 121421434027. The next prime is 121421434039. The reversal of 121421434034 is 430434124121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 430434124121 = 6983 ⋅61640287.

It can be written as a sum of positive squares in only one way, i.e., 110720566009 + 10700868025 = 332747^2 + 103445^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121421433988 and 121421434006.

It is not an unprimeable number, because it can be changed into a prime (121421434039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30355358507 + ... + 30355358510.

Almost surely, 2^121421434034 is an apocalyptic number.

121421434034 is a deficient number, since it is larger than the sum of its proper divisors (60710717020).

121421434034 is an equidigital number, since it uses as much as digits as its factorization.

121421434034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60710717019.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 121421434034 its reverse (430434124121), we get a palindrome (551855558155).

The spelling of 121421434034 in words is "one hundred twenty-one billion, four hundred twenty-one million, four hundred thirty-four thousand, thirty-four".