220021100111121 has 8 divisors (see below), whose sum is σ = 294286897310784. Its totient is φ = 146218018159440.

The previous prime is 220021100111093. The next prime is 220021100111243. The reversal of 220021100111121 is 121111001120022.

It is a happy number.

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

It is not a de Polignac number, because 220021100111121 - 2²⁶ = 220021033002257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220021100111121.

It is not an unprimeable number, because it can be changed into a prime (220021100118121) 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, 115678810885 + ... + 115678812786.

It is an arithmetic number, because the mean of its divisors is an integer number (36785862163848).

Almost surely, 2^{220021100111121} is an apocalyptic number.

It is an amenable number.

220021100111121 is a deficient number, since it is larger than the sum of its proper divisors (74265797199663).

220021100111121 is a wasteful number, since it uses less digits than its factorization.

220021100111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231357623991.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 220021100111121 its reverse (121111001120022), we get a palindrome (341132101231143).

The spelling of 220021100111121 in words is "two hundred twenty trillion, twenty-one billion, one hundred million, one hundred eleven thousand, one hundred twenty-one".