121421541466 has 8 divisors (see below), whose sum is σ = 182255295924. Its totient is φ = 60669776160.

The previous prime is 121421541463. The next prime is 121421541499. The reversal of 121421541466 is 664145124121.

It can be written as a sum of positive squares in 2 ways, for example, as 112378482441 + 9043059025 = 335229^2 + 95095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (121421541463) 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, 20493585 + ... + 20499508.

Almost surely, 2^121421541466 is an apocalyptic number.

121421541466 is a deficient number, since it is larger than the sum of its proper divisors (60833754458).

121421541466 is a wasteful number, since it uses less digits than its factorization.

121421541466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40994576.

The product of its digits is 46080, while the sum is 37.

Adding to 121421541466 its reverse (664145124121), we get a palindrome (785566665587).

The spelling of 121421541466 in words is "one hundred twenty-one billion, four hundred twenty-one million, five hundred forty-one thousand, four hundred sixty-six".