220400034121 has 4 divisors (see below), whose sum is σ = 222459847632. Its totient is φ = 218340220612.

The previous prime is 220400034119. The next prime is 220400034157. The reversal of 220400034121 is 121430004022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220400034121 - 2¹ = 220400034119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220400034721) 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, 1029906595 + ... + 1029906808.

It is an arithmetic number, because the mean of its divisors is an integer number (55614961908).

Almost surely, 2^220400034121 is an apocalyptic number.

It is an amenable number.

220400034121 is a deficient number, since it is larger than the sum of its proper divisors (2059813511).

220400034121 is a wasteful number, since it uses less digits than its factorization.

220400034121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059813510.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 220400034121 its reverse (121430004022), we get a palindrome (341830038143).

The spelling of 220400034121 in words is "two hundred twenty billion, four hundred million, thirty-four thousand, one hundred twenty-one".