121342136342 has 64 divisors (see below), whose sum is σ = 228007872000. Its totient is φ = 47223439872.

The previous prime is 121342136303. The next prime is 121342136369. The reversal of 121342136342 is 243631243121.

It is a junction number, because it is equal to n+sod(n) for n = 121342136299 and 121342136308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11168909 + ... + 11179767.

It is an arithmetic number, because the mean of its divisors is an integer number (3562623000).

Almost surely, 2^121342136342 is an apocalyptic number.

121342136342 is a deficient number, since it is larger than the sum of its proper divisors (106665735658).

121342136342 is a wasteful number, since it uses less digits than its factorization.

121342136342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12533.

The product of its digits is 20736, while the sum is 32.

Adding to 121342136342 its reverse (243631243121), we get a palindrome (364973379463).

The spelling of 121342136342 in words is "one hundred twenty-one billion, three hundred forty-two million, one hundred thirty-six thousand, three hundred forty-two".