220001212010121 has 8 divisors (see below), whose sum is σ = 293725541825664. Its totient is φ = 146472178434000.

The previous prime is 220001212010101. The next prime is 220001212010123. The reversal of 220001212010121 is 121010212100022.

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

It is not a de Polignac number, because 220001212010121 - 2⁹ = 220001212009609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220001212010121.

It is not an unprimeable number, because it can be changed into a prime (220001212010123) 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, 48824057226 + ... + 48824061731.

It is an arithmetic number, because the mean of its divisors is an integer number (36715692728208).

Almost surely, 2^{220001212010121} is an apocalyptic number.

It is an amenable number.

220001212010121 is a deficient number, since it is larger than the sum of its proper divisors (73724329815543).

220001212010121 is an equidigital number, since it uses as much as digits as its factorization.

220001212010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97648119711.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220001212010121 its reverse (121010212100022), we get a palindrome (341011424110143).

The spelling of 220001212010121 in words is "two hundred twenty trillion, one billion, two hundred twelve million, ten thousand, one hundred twenty-one".