220031110212121 has 8 divisors (see below), whose sum is σ = 236956700078784. Its totient is φ = 203105537466960.

The previous prime is 220031110212113. The next prime is 220031110212191. The reversal of 220031110212121 is 121212011130022.

220031110212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220031110212121 - 2³ = 220031110212113 is a prime.

It is a super-2 number, since 2×220031110212121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220031110212191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37553526 + ... + 43015456.

It is an arithmetic number, because the mean of its divisors is an integer number (29619587509848).

Almost surely, 2^{220031110212121} is an apocalyptic number.

It is an amenable number.

220031110212121 is a deficient number, since it is larger than the sum of its proper divisors (16925589866663).

220031110212121 is a wasteful number, since it uses less digits than its factorization.

220031110212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560751.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 220031110212121 its reverse (121212011130022), we get a palindrome (341243121342143).

The spelling of 220031110212121 in words is "two hundred twenty trillion, thirty-one billion, one hundred ten million, two hundred twelve thousand, one hundred twenty-one".