1220110121021 has 8 divisors (see below), whose sum is σ = 1401083392800. Its totient is φ = 1050812544240.

The previous prime is 1220110120993. The next prime is 1220110121051. The reversal of 1220110121021 is 1201210110221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220110121021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220110120987 and 1220110121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220110121051) 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, 2918923526 + ... + 2918923943.

It is an arithmetic number, because the mean of its divisors is an integer number (175135424100).

Almost surely, 2^{1220110121021} is an apocalyptic number.

1220110121021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220110121021 is a deficient number, since it is larger than the sum of its proper divisors (180973271779).

1220110121021 is a wasteful number, since it uses less digits than its factorization.

1220110121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5837847499.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220110121021 its reverse (1201210110221), we get a palindrome (2421320231242).

The spelling of 1220110121021 in words is "one trillion, two hundred twenty billion, one hundred ten million, one hundred twenty-one thousand, twenty-one".