121341653642 has 32 divisors (see below), whose sum is σ = 199236533760. Its totient is φ = 54967405680.

The previous prime is 121341653581. The next prime is 121341653677. The reversal of 121341653642 is 246356143121.

121341653642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121341653596 and 121341653605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9139493 + ... + 9152759.

It is an arithmetic number, because the mean of its divisors is an integer number (6226141680).

Almost surely, 2^121341653642 is an apocalyptic number.

121341653642 is a deficient number, since it is larger than the sum of its proper divisors (77894880118).

121341653642 is a wasteful number, since it uses less digits than its factorization.

121341653642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14666.

The product of its digits is 103680, while the sum is 38.

Adding to 121341653642 its reverse (246356143121), we get a palindrome (367697796763).

The spelling of 121341653642 in words is "one hundred twenty-one billion, three hundred forty-one million, six hundred fifty-three thousand, six hundred forty-two".