121220410 has 8 divisors (see below), whose sum is σ = 218196756. Its totient is φ = 48488160.

The previous prime is 121220401. The next prime is 121220413. The reversal of 121220410 is 14022121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117483921 + 3736489 = 10839^2 + 1933^2 .

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 (121220413) 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, 6061011 + ... + 6061030.

Almost surely, 2^121220410 is an apocalyptic number.

121220410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220410 is a deficient number, since it is larger than the sum of its proper divisors (96976346).

121220410 is a wasteful number, since it uses less digits than its factorization.

121220410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12122048.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121220410 is about 11010.0140781018. The cubic root of 121220410 is about 494.9088836813.

Adding to 121220410 its reverse (14022121), we get a palindrome (135242531).

The spelling of 121220410 in words is "one hundred twenty-one million, two hundred twenty thousand, four hundred ten".