121230542634 has 16 divisors (see below), whose sum is σ = 253002871872. Its totient is φ = 38653216448.

The previous prime is 121230542633. The next prime is 121230542639. The reversal of 121230542634 is 436245032121.

It is a junction number, because it is equal to n+sod(n) for n = 121230542595 and 121230542604.

It is not an unprimeable number, because it can be changed into a prime (121230542633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439240959 + ... + 439241234.

It is an arithmetic number, because the mean of its divisors is an integer number (15812679492).

Almost surely, 2^121230542634 is an apocalyptic number.

121230542634 is an abundant number, since it is smaller than the sum of its proper divisors (131772329238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121230542634 is a wasteful number, since it uses less digits than its factorization.

121230542634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878482221.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 121230542634 its reverse (436245032121), we get a palindrome (557475574755).

The spelling of 121230542634 in words is "one hundred twenty-one billion, two hundred thirty million, five hundred forty-two thousand, six hundred thirty-four".