421101243351155 has 32 divisors (see below), whose sum is σ = 534600162673920. Its totient is φ = 318057238343680.

The previous prime is 421101243351101. The next prime is 421101243351157. The reversal of 421101243351155 is 551153342101124.

It is not a de Polignac number, because 421101243351155 - 2⁸ = 421101243350899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421101243351157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244678274 + ... + 246393303.

It is an arithmetic number, because the mean of its divisors is an integer number (16706255083560).

Almost surely, 2^{421101243351155} is an apocalyptic number.

421101243351155 is a deficient number, since it is larger than the sum of its proper divisors (113498919322765).

421101243351155 is a wasteful number, since it uses less digits than its factorization.

421101243351155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491071759.

The product of its (nonzero) digits is 72000, while the sum is 38.

Adding to 421101243351155 its reverse (551153342101124), we get a palindrome (972254585452279).

The spelling of 421101243351155 in words is "four hundred twenty-one trillion, one hundred one billion, two hundred forty-three million, three hundred fifty-one thousand, one hundred fifty-five".