121334547881 has 4 divisors (see below), whose sum is σ = 121335869952. Its totient is φ = 121333225812.

The previous prime is 121334547871. The next prime is 121334547911. The reversal of 121334547881 is 188745433121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121334547881 - 2¹⁰ = 121334546857 is a prime.

It is a super-2 number, since 2×121334547881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121334547871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512201 + ... + 710646.

It is an arithmetic number, because the mean of its divisors is an integer number (30333967488).

Almost surely, 2^121334547881 is an apocalyptic number.

It is an amenable number.

121334547881 is a deficient number, since it is larger than the sum of its proper divisors (1322071).

121334547881 is an equidigital number, since it uses as much as digits as its factorization.

121334547881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322070.

The product of its digits is 645120, while the sum is 47.

The spelling of 121334547881 in words is "one hundred twenty-one billion, three hundred thirty-four million, five hundred forty-seven thousand, eight hundred eighty-one".