121761261052 has 12 divisors (see below), whose sum is σ = 217102626216. Its totient is φ = 59731939280.

The previous prime is 121761261043. The next prime is 121761261119. The reversal of 121761261052 is 250162167121.

It is a junction number, because it is equal to n+sod(n) for n = 121761260999 and 121761261017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287172574 + ... + 287172997.

It is an arithmetic number, because the mean of its divisors is an integer number (18091885518).

Almost surely, 2^121761261052 is an apocalyptic number.

It is an amenable number.

121761261052 is a deficient number, since it is larger than the sum of its proper divisors (95341365164).

121761261052 is a wasteful number, since it uses less digits than its factorization.

121761261052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574345628 (or 574345626 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 121761261052 in words is "one hundred twenty-one billion, seven hundred sixty-one million, two hundred sixty-one thousand, fifty-two".