121221434033234 has 16 divisors (see below), whose sum is σ = 186269946067800. Its totient is φ = 59131497479040.

The previous prime is 121221434033197. The next prime is 121221434033261. The reversal of 121221434033234 is 432330434122121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20699815587025 + 100521618446209 = 4549705^2 + 10026047^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121221434033194 and 121221434033203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5987009 + ... + 16681940.

Almost surely, 2^{121221434033234} is an apocalyptic number.

121221434033234 is a deficient number, since it is larger than the sum of its proper divisors (65048512034566).

121221434033234 is a wasteful number, since it uses less digits than its factorization.

121221434033234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22734205.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 121221434033234 its reverse (432330434122121), we get a palindrome (553551868155355).

The spelling of 121221434033234 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, four hundred thirty-four million, thirty-three thousand, two hundred thirty-four".