20243121223402 has 16 divisors (see below), whose sum is σ = 37857265664832. Its totient is φ = 7886930346720.

The previous prime is 20243121223397. The next prime is 20243121223489. The reversal of 20243121223402 is 20432212134202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65724419403 + ... + 65724419710.

It is an arithmetic number, because the mean of its divisors is an integer number (2366079104052).

Almost surely, 2^{20243121223402} is an apocalyptic number.

20243121223402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20243121223402 is a deficient number, since it is larger than the sum of its proper divisors (17614144441430).

20243121223402 is a wasteful number, since it uses less digits than its factorization.

20243121223402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131448839133.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20243121223402 its reverse (20432212134202), we get a palindrome (40675333357604).

The spelling of 20243121223402 in words is "twenty trillion, two hundred forty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, four hundred two".