121755720034 has 64 divisors (see below), whose sum is σ = 208110551040. Its totient is φ = 53000101440.

The previous prime is 121755720017. The next prime is 121755720041. The reversal of 121755720034 is 430027557121.

It is a super-2 number, since 2×121755720034² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121755719975 and 121755720002.

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, 51350869 + ... + 51353239.

It is an arithmetic number, because the mean of its divisors is an integer number (3251727360).

Almost surely, 2^121755720034 is an apocalyptic number.

121755720034 is a deficient number, since it is larger than the sum of its proper divisors (86354831006).

121755720034 is a wasteful number, since it uses less digits than its factorization.

121755720034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575.

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 121755720034 in words is "one hundred twenty-one billion, seven hundred fifty-five million, seven hundred twenty thousand, thirty-four".