121403021434 has 16 divisors (see below), whose sum is σ = 192851798400. Its totient is φ = 57120393664.

The previous prime is 121403021401. The next prime is 121403021449. The reversal of 121403021434 is 434120304121.

It is a super-2 number, since 2×121403021434² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121403021399 and 121403021408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135844 + ... + 511135.

It is an arithmetic number, because the mean of its divisors is an integer number (12053237400).

Almost surely, 2^121403021434 is an apocalyptic number.

121403021434 is a deficient number, since it is larger than the sum of its proper divisors (71448776966).

121403021434 is a wasteful number, since it uses less digits than its factorization.

121403021434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652517.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 121403021434 its reverse (434120304121), we get a palindrome (555523325555).

The spelling of 121403021434 in words is "one hundred twenty-one billion, four hundred three million, twenty-one thousand, four hundred thirty-four".