121224314402 has 4 divisors (see below), whose sum is σ = 181836471606. Its totient is φ = 60612157200.

The previous prime is 121224314401. The next prime is 121224314411. The reversal of 121224314402 is 204413422121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83643002521 + 37581311881 = 289211^2 + 193859^2 .

It is not an unprimeable number, because it can be changed into a prime (121224314401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30306078599 + ... + 30306078602.

Almost surely, 2^121224314402 is an apocalyptic number.

121224314402 is a deficient number, since it is larger than the sum of its proper divisors (60612157204).

121224314402 is an equidigital number, since it uses as much as digits as its factorization.

121224314402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60612157203.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 121224314402 its reverse (204413422121), we get a palindrome (325637736523).

The spelling of 121224314402 in words is "one hundred twenty-one billion, two hundred twenty-four million, three hundred fourteen thousand, four hundred two".